The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-173-7873, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-173-7873 |
| Primary Part Number | 3M943T4-2-8 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Hole Arrangement Style | ONE END DRILLED |
| Thread Length | 0.250 INCHES NOMINAL IN |
| First End Style | SQUARE |
| First Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN |
| Shank Length | 0.530 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-T-9047,TYPE 3,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Second Shank Length | 0.750 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.438 INCHES NOMINAL IN |
| Second End Tip Radius | 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Second End Style | CHAMFERED |
| Thread Class | 3A A |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Centerline of Hole to End of Pin | 0.140 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3M943T4-2-8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943T4-2-8 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943T4-2-8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943T4-2-8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943T4-2-8 PRIMARY | G.s. Precision, Inc. (USA) |
| 3M943T4-2-8 PRIMARY | Hi-Shear Corporation (USA) |
| 11415T4-2-8 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3258T4-2-8 | 3/2 Design control — primary reference U.S. Government activity |
| 3M943T4-2-8 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| AAP139T4-2-8 | 3/2 Design control — primary reference U.S. Government activity |
| D792683T2N8 | 5/9 Secondary reference U.S. Government activity |
| D792683T2N8 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5315-01-173-7873 is a Pin,shoulder,headless, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-173-7873 has 7 manufacturer part numbers on file: 3M943T4-2-8 (Sps Technologies, Llc Dba PB Fasteners), 3M943T4-2-8 (Reid Products Inc. Dba Reid Products Inc), 3M943T4-2-8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M943T4-2-8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M943T4-2-8 (G.s. Precision, Inc.) and 2 more.
Key specifications for 3M943T4-2-8: Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Second Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; First End Location: THREADED END; Hole Arrangement Style: ONE END DRILLED. 22 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.