The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-526-7897, 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 22 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-526-7897 |
| Primary Part Number | 3M943C3-4-3 |
| 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 Taper Length | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| First End Location | UNTHREADED END |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.345 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Shank Length | 0.378 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Second Shank Length | 0.595 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| First End Tip Radius | 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Second End Style | SQUARE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 OR STEEL COMP 304 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 |
|---|---|
| VS3258C3-4-3 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M943C3-4-3 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943C3-4-3 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M943C3-4-3 | G.s. Precision, Inc. (USA) |
| 3M943C3-4-3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943C3-4-3 | Saturn Fasteners Inc (USA) |
| 3M943C3-4-3 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M943C3-4-3 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943C3-4-3 | Hi-Shear Corporation (USA) |
| D792682C4N3 | Huck International, Inc (USA) |
| 11415C3-4-3 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| AAP139C3-4-3 | 5/2 Secondary reference U.S. Government activity |
| 3M943C3-4-3 | 5/2 Secondary reference U.S. Government activity |
NSN 5315-01-526-7897 is a Pin,shoulder,headless, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-526-7897 has 11 manufacturer part numbers on file: VS3258C3-4-3 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 3M943C3-4-3 (Sps Technologies, Llc Dba PB Fasteners), 3M943C3-4-3 (Sps Technologies Ltd, Tj Brooks Division), 3M943C3-4-3 (G.s. Precision, Inc.), 3M943C3-4-3 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 6 more.
Key specifications for 3M943C3-4-3: 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 Taper Length: 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN; First End Location: UNTHREADED END. 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.