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HRS/ST/PS/HST/HTP/LSTA/LSTI/MST/MSTA/
MSTC/MSTI Strap Ties


Installation

View step-by-step installation instructions

Straps are designed to transfer tension loads in a wide variety of applications.

HRS - A 12 gauge strap with a nailing pattern designed for installation on the edge of 2x members. The HRS416Z installs with Simpson Strong-Tie® Strong-Drive® SDS screws.

LSTA and MSTA - Designed for use on the edge of 2x members, with a nailing pattern that reduces the potential for splitting.

LSTI - Light straps that are suitable where pneumatic-nailing is necessary through diaphragm decking and wood chord open web trusses.

MST - Splitting may be a problem with installations on lumber smaller than 3 1/2"; either fill every nail hole with 10dx1 1/2" nails or fill every-other hole with 16d common nails. Reduce the allowable load based upon the size and quantity of fasteners used.

MSTC - High Capacity strap which utilizes a staggered nail pattern to help minimize wood splitting. Nail slots have been countersunk to provide a lower nail head profile.

Finish: PS—HDG; HST3 and HST6—Simpson Strong-Tie® gray paint; all others—galvanized. Some products are available in stainless steel or ZMAX® coating; see Corrosion Information.

Installation: Use all specified fasteners. See General Notes.

SD9 & SD10 Compatible

Some products may be installed with the Strong-Drive® SD Structural Connector screw -
click here for details

Options: Special sizes can be made to order. Contact Simpson Strong-Tie.

Codes: MSTC and RPS meet code requirements for reinforcing cut members (16 gauge) at top plate and RPS at sill plate.
International Residential Code®- 2000/2006 R602.6.1
International Building Code®- 2000/2006 2308.9.8

See RPS.


top Gallery:
MSTI        

  MST          

  LSTI        

  LSTA and MSTA       
(Pilot holes not shown)         

  ST        

  ST9, ST12, ST18, ST22        

         
 
  roll over images below to see larger image
 
MSTC
(MSTC28 shown; MSTC40, MSTC52, MSTC66, MSTC78 similar)
ST2115 HTP37Z HST
 
HRS HRS416Z Typical MSTI Installation
(MIT hanger shown)
LSTI similar
 
   
Typical LSTI Installation Typical HRS Installation    
 
  roll over images below to see larger image
 
Typical LSTA Installation (hanger not shown)
Bend strap one time only


 
PS   Typical PS720 Installation
PS strap design loads must be determined by the Designer for each installation. Bolts are installed both perpendicular and parallel-to- grain. Hole diameter in the part may be oversized to accommodate the HDG. Designer must determine if the oversize creates an unacceptable installation.
 
  roll over images below to see larger image
 
Typical Detail with Strap Installed Over Sheathing
  Floor-to-Floor
Tie Installation showing a Clear Span

top Floor-to-Floor Clear Span Table:
These models are approved for installation with the Strong-Drive SD Structural-Connector screw.
See the load values below.
Table
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. Install bolts or nails as specified by Designer. Bolt and nail values may not be combined.
  3. Allowable bolt loads are based on parallel-to-grain loading and these minimum member thicknesses: MST – 2 1/2"; HST2 and
    HST5 – 4"; HST3 and HST6 – 4 1/2".
  4. Use half of the required nails in each member being connected to achieve the listed loads.
  5. When installing strap over wood structural panel sheathing, use 2 1/2" long nail minimum.
  6. Tension loads apply for uplift as well when installed vertically.
  7. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" long, 10dx1 1/2 = 0.148" dia. x 1 1/2" long. See other nail sizes and information.

top Load Tables: See code report listings below

Load Values with Nails

Additional Corrosion Protection

These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

These models are approved for installation with the Strong-Drive SD Structural-Connector screw.
See the load values below.
Table
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. 10dx1 1/2" nails may be substituted where 16d sinkers or 10d are specified at 100% of the table loads except where straps are installed over sheathing.
  3. 10d commons may be substituted where 16d sinkers are specified at 100% of table loads.
  4. 16d sinkers (0.148" dia x 3 1/4" long ) or 10d commons may be substituted where 16d commons are specified at 0.84 of the table loads.
  5. Use half of the nails in each member being connected to achieve the listed loads.
  6. Tension loads apply for uplift when installed vertically.
  7. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" long, 10d = 0.148" dia. x 3" long,
    10dx1 1/2 = 0.148" dia. x 1 1/2" long. See other nail sizes and information.
Additional Corrosion Protection

These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

These models are approved for installation with the Strong-Drive SD Structural-Connector screw.
See the load values below.
Table
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. Install bolts or nails as specified by Designer. Bolt and nail values may not be combined. 
  3. Allowable bolt loads are based on parallel-to-grain loading and these minimum member thicknesses: MST – 2 1/2"; HST2 and
    HST5 – 4"; HST3 and HST6 – 4 1/2".
  4. Use half of the required nails in each member being connected to achieve the listed loads.
  5. When installing strap over wood structural panel sheathing, use 2 1/2" long nail minimum.
  6. Tension loads apply for uplift as well when installed vertically.
  7. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" long, 10dx1 1/2 = 0.148" dia. x 1 1/2" long. See other nail sizes and information.

Load Values with SD Series Screws

Additional Corrosion Protection

These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

Model
No.
Fasteners (Total) Allowable Tension Loads (DF/SP) Allowable Tension Loads (SPF/HF)
(160) (160)
LSTA9 8-SD9112 1095 715
LSTA12 10-SD9112 1235 895
LSTA15 12-SD9112 1235 1075
LSTA18 14-SD9112 1235 1235
LSTA21 14-SD9112 1235 1215
LSTA24 14-SD9112 1235 1235
ST292 12-SD10112 1215 1215
ST2122 12-SD10112 1480 1325
ST2115 6-SD10112 660 660
ST2215 14-SD10112 1750 1545
LSTA30 14-SD9112 1640 1255
LSTA36 14-SD9112 1415 1255
LSTI49 16-SD9112 4205 2865
LSTI73 16-SD9112 4205 2865
MSTA9 8-SD9112 1095 715
bluearrow
MSTA12
10-SD9112 1370 895
bluearrow
MSTA15
12-SD9112 1640 1075
bluearrow
MSTA18
14-SD9112 1640 1255
bluearrow
MSTA21
14-SD9112 1640 1255
bluearrow
MSTA24
14-SD9112 1640 1255
bluearrow
MSTA30
16-SD9112 2050 1435
bluearrow
MSTA36
16-SD9112 1970 1435
MSTA49 16-SD9112 2050 1435
ST6215 16-SD10112 2010 1765
ST6224 20-SD10112 2460 2210
ST9 8-SD10112 1105 885
ST12 10-SD10112 1385 1105
ST18 12-SD10112 1420 1325
ST22 12-SD10112 1420 1325
MSTC28 36-SD9112 4735 3225
MSTC40 46-SD9112 4735 4120
MSTC52 42-SD9112 4735 3765
bluearrow
HTP37Z
20-SD9112 2735 1790
MSTC66 44-SD9112 5850 3940
MSTC78 44-SD9112 5850 3940
ST6236 28-SD10112 3590 3090
HRS6 6-SD9112 820 540
HRS8 10-SD9112 1370 895
HRS12 14-SD9112 1915 1255
MSTI26 26-SD9112 3555 2330
MSTI36 36-SD9112 4925 3225
MSTI48 38-SD9112 5070 3405
MSTI60 38-SD9112 5070 3405
MSTI72 60-SD9112 5070 4760
bluearrow
MST27
30-SD10112 4150 3310
bluearrow
MST37
40-SD10112 5070 4415
bluearrow
MST48
52-SD10112 5310 5035
bluearrow
MST60
68-SD10112 6765 6375
MST72 70-SD10112 6765 6375


next  top Code Reports (PDFs):
Legacy Reports
  IAPMO UES ER ICC-ES ESR CITY OF LOS ANGELES STATE OF FLORIDA ICC-ES NER ICC-ES ER ICC-ES ES
HRSSee specific model numbers for code listings.
HRS12 ER-124 ESR-3096 RR25489 / RR25910 FL11470 / FL13872      
HRS416ZNo code listing: Please contact us for test data.
HRS6 ER-124 ESR-3096 RR25489 / RR25910 FL11470 / FL13872      
HRS8 ER-124 ESR-3096 RR25489 / RR25910 FL11470 / FL13872      
HSTSee specific model numbers for code listings.
HST2  ESR-2105 / ESR-2523 * RR25713 FL10852      
HST3  ESR-2105 / ESR-2523 * RR25713 FL10852      
HST5  ESR-2105 / ESR-2523 * RR25713 FL10852      
HST5-4 No code listing. Please contact us for test data.
HST6  ESR-2105 / ESR-2523 * RR25713 FL10852      
HST6-41/2 No code listing. Please contact us for test data.
HTP37Z  ESR-3096 RR25910        
LSTASee specific model numbers for code listings.
LSTA12 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA15 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA18 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA21 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA24 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA30 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA36 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTA9 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTISee specific model numbers for code listings.
LSTI49 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
LSTI73 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTSee specific model numbers for code listings.
MST21/2 No code listing. Please contact us for test data.
MST27  ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MST37  ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MST48  ESR-2105 / ESR-2523 * RR25713 FL10852      
MST60  ESR-2105 / ESR-2523 * RR25713 FL10852      
MST72  ESR-2105 / ESR-2523 * RR25713 FL10852      
MSTASee specific model numbers for code listings.
MSTA12 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA12SSNo code listing: Please contact us for test data.
MSTA12Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA15 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA15Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA18 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA18SSNo code listing: Please contact us for test data.
MSTA18Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA21 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA21Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA24 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA24SSNo code listing: Please contact us for test data.
MSTA24Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA30 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA30Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA36 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTA36SSNo code listing: Please contact us for test data.
MSTA36Z ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25910 FL10852      
MSTA49 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25489 / RR25910 FL10852      
MSTA9 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTAM24Z             
MSTAM36Z             
MSTCSee specific model numbers for code listings.
MSTC28 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTC40 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTC52 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTC66 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTC78 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTISee specific model numbers for code listings.
MSTI26 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTI36 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTI48 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTI60 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
MSTI72 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
PSSee specific model numbers for code listings.
PS218No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
PS418No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
PS720No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
STSee specific model numbers for code listings.
ST12 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST18 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST2115 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST2122 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST22 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST2215 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST292 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST6215 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST6224 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST6236 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      
ST9 ER-124 ESR-2105 / ESR-2523 * / ESR-3096 RR25713 / RR25489 / RR25910 FL10852 / FL13872      

* ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction



next  topDrawings: To download drawings, right-click or Ctrl-click on the link, then choose "Save Target As..."
Download the Simpson Strong-Tie® AutoCAD® Menu, which allows you to insert Ortho views directly into your AutoCAD drawing.

 ORTHOGRAPHIC
PERSPECTIVE
HRSNone for this model None for this model
HRS12 HRS12: DWG | DXF
None for this model
HRS416Z HRS416Z: DWG | DXF
HRS416Z: DWG | DXF
HRS6 HRS6: DWG | DXF
None for this model
HRS8 HRS8: DWG | DXF
HRS8: DWG | DXF
HSTNone for this model None for this model
HST2 HST2: DWG | DXF
None for this model
HST3 HST3: DWG | DXF
None for this model
HST5None for this model None for this model
HST5-4None for this model None for this model
HST6None for this model None for this model
HST6-41/2None for this model None for this model
HTP37Z HTP37Z: DWG | DXF
HTP37Z: DWG | DXF
LSTANone for this model Floor to Floor Connections: DWG | DXF
LSTA Method 1: DWG | DXF
LSTA Method 2: DWG | DXF
LSTA12 LSTA12: DWG | DXF
High Wind-Resistant Construction D133: Load Path Installation Considerations: Cross-Grain Tension: DWG | DXF
LSTA15 LSTA15: DWG | DXF
None for this model
LSTA18 LSTA18: DWG | DXF
High Wind-Resistant Construction D45: Stud to Band Joist: DWG | DXF
High Wind-Resistant Construction D72: Wall to Pile/Girder: DWG | DXF
Floor to Floor Connections: DWG | DXF
Pile to Girder Connectors 2: DWG | DXF
Stud to Band Joist Connections Version 2: DWG | DXF
LSTA21 LSTA21: DWG | DXF
High Wind-Resistant Construction D58: Header to Wall Framing: DWG | DXF
High Wind-Resistant Construction D70: Wall to Pile/Girder: DWG | DXF
LSTA24 LSTA24: DWG | DXF
High Wind-Resistant Construction D111: Gable End to Wall Framing: DWG | DXF
LSTA30 LSTA30: DWG | DXF
None for this model
LSTA36 LSTA36: DWG | DXF
High Wind-Resistant Construction D51: Floor to Masonry/Concrete: DWG | DXF
LSTA9 LSTA9: DWG | DXF
None for this model
LSTINone for this model LSTI: DWG | DXF
LSTI49 LSTI49: DWG | DXF
None for this model
LSTI73None for this model None for this model
MSTNone for this model None for this model
MST21/2None for this model None for this model
MST27 MST27: DWG | DXF
None for this model
MST37 MST37: DWG | DXF
None for this model
MST48 MST48: DWG | DXF
None for this model
MST60 MST60: DWG | DXF
None for this model
MST72 MST72: DWG | DXF
None for this model
MSTANone for this model High Wind-Resistant Construction D77: Post/Column to Beam: DWG | DXF
MSTA12None for this model None for this model
MSTA12SSNone for this model None for this model
MSTA12ZNone for this model None for this model
MSTA15None for this model None for this model
MSTA15ZNone for this model None for this model
MSTA18 MSTA18: DWG | DXF
None for this model
MSTA18SSNone for this model None for this model
MSTA18ZNone for this model None for this model
MSTA21None for this model None for this model
MSTA21ZNone for this model None for this model
MSTA24 MSTA24: DWG | DXF
None for this model
MSTA24SSNone for this model None for this model
MSTA24ZNone for this model None for this model
MSTA30 MSTA30: DWG | DXF
High Wind-Resistant Construction D118: Load Path Installation Considerations: Bulging Floor-to-Floor Straps: DWG | DXF
MSTA30ZNone for this model None for this model
MSTA36 MSTA36: DWG | DXF
High Wind-Resistant Construction D46: Stud to Band Joist: DWG | DXF
Floor to Floor Connections: DWG | DXF
MSTA36SSNone for this model None for this model
MSTA36ZNone for this model None for this model
MSTA49None for this model None for this model
MSTA9None for this model None for this model
MSTAM24ZNone for this model None for this model
MSTAM36ZNone for this model None for this model
MSTCNone for this model None for this model
MSTC28 MSTC28: DWG | DXF
None for this model
MSTC40 MSTC40: DWG | DXF
None for this model
MSTC52 MSTC52: DWG | DXF
None for this model
MSTC66 MSTC66: DWG | DXF
None for this model
MSTC78 MSTC78: DWG | DXF
None for this model
MSTINone for this model MSTI: DWG | DXF
MSTI26None for this model None for this model
MSTI36None for this model None for this model
MSTI48None for this model None for this model
MSTI60None for this model None for this model
MSTI72None for this model None for this model
PSNone for this model None for this model
PS218 PS218: DWG | DXF
None for this model
PS418 PS418: DWG | DXF
Pile to Girder Connectors 1: DWG | DXF
Pile to Girder Connectors 2: DWG | DXF
Stud to Band Joist Connections: DWG | DXF
PS720 PS720: DWG | DXF
High Wind-Resistant Construction D70: Wall to Pile/Girder: DWG | DXF
High Wind-Resistant Construction D71: Wall to Pile/Girder: DWG | DXF
High Wind-Resistant Construction D72: Wall to Pile/Girder: DWG | DXF
PS720: DWG | DXF
STNone for this model None for this model
ST12 ST12: DWG | DXF
ST12 front view: DWG | DXF
ST12 right view: DWG | DXF
None for this model
ST18 ST18: DWG | DXF
ST18 front view: DWG | DXF
ST18 right view: DWG | DXF
None for this model
ST2115 ST2115: DWG | DXF
None for this model
ST2122 ST2122: DWG | DXF
None for this model
ST22 ST22: DWG | DXF
ST22 front view: DWG | DXF
ST22 right view: DWG | DXF
None for this model
ST2215 ST2215: DWG | DXF
None for this model
ST292 ST292: DWG | DXF
None for this model
ST6215 ST6215: DWG | DXF
None for this model
ST6224 ST6224: DWG | DXF
None for this model
ST6236 ST6236: DWG | DXF
None for this model
ST9 ST9: DWG | DXF
ST9 front view: DWG | DXF
ST9 right view: DWG | DXF
None for this model

   
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