The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-312-0756, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-312-0756 |
| Primary Part Number | 3M943T3-2-4 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.1851 INCHES MINIMUM AND 0.1863 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| First End Location | UNTHREADED END |
| Thread Length | 0.405 INCHES NOMINAL IN |
| First End Style | SQUARE |
| Shank Length | 0.420 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-T-9047,TY 3,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Second Shank Length | 0.470 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.375 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 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 3M943T3-2-4 | West Coast Aerospace, Inc. (USA) |
| 3M943T3-2-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943T3-2-4 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M943T3-2-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943T3-2-4 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 11415T3-2-4 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943T3-2-4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943T3-2-4 | Hi-Shear Corporation (USA) |
| 3M943T3-2-4 PRIMARY | G.s. Precision, Inc. (USA) |
| 3M943T3-2-4 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| AAP139T3-2-4 | 3/2 Design control — primary reference U.S. Government activity |
| 3M943T3-2-4 | 5/2 Secondary reference U.S. Government activity |
| D792682T2N4 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| D792682T2N4 | 5/9 Secondary reference U.S. Government activity |
| VS3258T3-2-4 | 5/2 Secondary reference U.S. Government activity |
| 3M943T3-2-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5315-01-312-0756 is a Pin,shoulder,headless, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-312-0756 has 10 manufacturer part numbers on file: 3M943T3-2-4 (West Coast Aerospace, Inc.), 3M943T3-2-4 (Sps Technologies, Llc Dba PB Fasteners), 3M943T3-2-4 (The Boeing Company Div Defense), 3M943T3-2-4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M943T3-2-4 (Sps Technologies Ltd, Tj Brooks Division) and 5 more.
Key specifications for 3M943T3-2-4: Shank Diameter: 0.1851 INCHES MINIMUM AND 0.1863 INCHES MAXIMUM IN; Second Shank Diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN; First End Location: UNTHREADED END; Thread Length: 0.405 INCHES NOMINAL IN. 19 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.