The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-481-9426, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-481-9426 |
| Primary Part Number | 3M943C3-4-4 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Shank Diameter | 0.189 INCHES NOMINAL IN |
| Second Shank Diameter | 0.185 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Surface Treatment Document and Classification | AMS QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.405 INCHES NOMINAL IN |
| First End Style | SQUARE |
| Shank Length | 0.595 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | QQ-S-763 COND B FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 COND B FED SPEC 2ND MATERIAL RESPONSE OR MMS265 COND B FSCM 76301 MFR REF 3RD MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.345 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Second Shank Length | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Shoulder Width Across Flats | 0.367 INCHES MINIMUM AND 0.376 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 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 303SE 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 |
|---|---|
| 3M943C3-4-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| WC943C3-4-4 | West Coast Aerospace, Inc. (USA) |
| 11415C3-4-4 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943C3-4-4 PRIMARY | Saturn Fasteners Inc (USA) |
| 3M943C3-4-4 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M943C3-4-4 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M943C3-4-4 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| D792682C4N4 PRIMARY | Huck International, Inc (USA) |
| 3M943C3-4-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943C3-4-4 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M943C3-4-4 PRIMARY | G.s. Precision, Inc. (USA) |
| 3M943C3-4-4 | Houston Precision Fasteners I Lp (USA) |
| VS3258C3-4-4 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M943C3-4-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3258C3-4-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M943C3-4-4 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M943C3-4-4 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M943C3-4-4 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 3M943C3-4-4 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| AAP139C3-4-4 | 5/2 Secondary reference U.S. Government activity |
| 3M943C3-4-4 | 5/9 Secondary reference Sps Technologies Inc |
| 3M943C3-4-4 | 3/2 Design control — primary reference U.S. Government activity |
| D792682C4N4 | 5/9 Secondary reference U.S. Government activity |
| VS3258C3-4-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5315-01-481-9426 is a Pin,shoulder,headless, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-481-9426 has 19 manufacturer part numbers on file: 3M943C3-4-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), WC943C3-4-4 (West Coast Aerospace, Inc.), 11415C3-4-4 (Reid Products Inc. Dba Reid Products Inc), 3M943C3-4-4 (Saturn Fasteners Inc), 3M943C3-4-4 (Sps Technologies Ltd, Tj Brooks Division) and 14 more.
Key specifications for 3M943C3-4-4: Shank Diameter: 0.189 INCHES NOMINAL IN; Second Shank Diameter: 0.185 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN; First End Location: THREADED END; Surface Treatment Document and Classification: AMS QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.