The Pin,straight,headless, cataloged under National Stock Number 5315-01-541-7535, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-541-7535 |
| Primary Part Number | 3M943C4-8-4 |
| Item Name | Pin,straight,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| First End Taper Length | 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Second End Taper Angle | 45.0 DEGREES NOMINAL |
| First End Style | CHAMFERED |
| Material Document and Classification | QQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.030 INCHES NOMINAL IN |
| First End Taper Angle | 30.0 DEGREES NOMINAL |
| Pin Overall Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Pin Overall Length | 1.530 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| First End Tip Radius | 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Second End Style | CHAMFERED |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 303SE 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 |
|---|---|
| WC943C4-8-4 | West Coast Aerospace, Inc. (USA) |
| 3M943C4-8-4 | G.s. Precision, Inc. (USA) |
| 3M943C4-8-4 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M943C4-8-4 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M943C4-8-4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3258C4-8-4 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M943C4-8-4 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M943C4-8-4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943C4-8-4 | Houston Precision Fasteners I Lp (USA) |
| 3M943C4-8-4 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| VS3258C4-8-4 | Howmet Global Fastening Systems Inc (USA) |
| 3M943C4-8-4 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M943C4-8-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943C4-8-4 PRIMARY | The Boeing Company Div Defense (USA) |
| D792683C8N4 | Huck International, Inc (USA) |
| 3M943C4-8-4 | Saturn Fasteners Inc (USA) |
| 11415C4-8-4 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943C4-8-4 | Hi-Shear Corporation (USA) |
| 3M943C4-8-4 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| VS3258C4-8-4 | 5/2 Secondary reference U.S. Government activity |
| 3M943C4-8-4 | 3/2 Design control — primary reference U.S. Government activity |
| 3M943C4-8-4 | 5/9 Secondary reference Sps Technologies Inc |
| AAP139C4-8-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5315-01-541-7535 is a Pin,straight,headless, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-541-7535 has 19 manufacturer part numbers on file: WC943C4-8-4 (West Coast Aerospace, Inc.), 3M943C4-8-4 (G.s. Precision, Inc.), 3M943C4-8-4 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 3M943C4-8-4 (Fastener Innovation Technology, Inc. Dba F I T), 3M943C4-8-4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 14 more.
Key specifications for 3M943C4-8-4: First End Taper Length: 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Second End Taper Angle: 45.0 DEGREES NOMINAL; First End Style: CHAMFERED. 14 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.