The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-477-7187, 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 15 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-477-7187 |
| Primary Part Number | 3M943C4B3-4 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| First End Style | SQUARE |
| Shank Length | 0.593 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | QQ-S-763,CONDB FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Relationship with First End | NOT IDENTICAL |
| Second Shank Length | 0.370 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Second End Tip Radius | 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Second End Style | CHAMFERED |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| 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 |
|---|---|
| 3M943C4B3-4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943C4B3-4 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 11415C4B3-4 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943C4B3-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943C4B3-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943C4B3-4 | G.s. Precision, Inc. (USA) |
| 3M943C4B3-4 | Hi-Shear Corporation (USA) |
| 3M943C4B3-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| VBS3258C4B34 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| 3M943C4B3-4 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3M943C4B3-4 | 5/9 Secondary reference Sps Technologies Inc |
| D792684BC3N4 | 5/9 Secondary reference U.S. Government activity |
| D792684BC3N4 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc. Div Huck Products Division |
| 3M943C4B3-4 | C/1 Advisory reference — outside the item-of-supply concept Saturn Fasteners Inc |
| D7926894BC3N4 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| AAP139C4B3-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5315-01-477-7187 is a Pin,shoulder,headless, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-477-7187 has 8 manufacturer part numbers on file: 3M943C4B3-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M943C4B3-4 (Sps Technologies Ltd, Tj Brooks Division), 11415C4B3-4 (Reid Products Inc. Dba Reid Products Inc), 3M943C4B3-4 (Sps Technologies, Llc Dba PB Fasteners), 3M943C4B3-4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 3 more.
Key specifications for 3M943C4B3-4: Shank Diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Second Shank Diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; First End Location: THREADED END; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 15 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.