The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-128-1648, 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 20 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-128-1648 |
| Primary Part Number | 3M943C4-2-13 |
| 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 | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Thread Length | 0.405 INCHES NOMINAL IN |
| First End Style | SQUARE |
| Shank Length | 0.530 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 | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Second Shank Length | 1.042 INCHES MINIMUM AND 1.102 INCHES MAXIMUM IN |
| Shoulder Width Across Flats | 0.438 INCHES NOMINAL 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 |
| 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 |
|---|---|
| 3M943C4-2-13 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943C4-2-13 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943C4-2-13 | Heartland Precision Fasteners Inc (USA) |
| 3M943C4-2-13 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M943C4-2-13 PRIMARY | Hi-Shear Corporation (USA) |
| 3M943C4-2-13 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| PC97002-1 | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
| 3M943C4-2-13 | Howmet Global Fastening Systems Inc (USA) |
| 3M943C4-2-13 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943C4-2-13 | West Coast Aerospace, Inc. (USA) |
| 3M943C4-2-13 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M943C4-2-13 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M943C4-2-13 PRIMARY | G.s. Precision, Inc. (USA) |
| 3M943C4-2-13 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943C4-2-13 | Saturn Fasteners Inc (USA) |
| D792683C2N13 PRIMARY | Huck International, Inc (USA) |
| 3M943C4-2-13 | Houston Precision Fasteners I Lp (USA) |
| 3M943C4-2-13 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M943C4-2-13 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| ST3M712C4-2-13 | 5/9 Secondary reference The Boeing Company Div Defense |
| 11415C4-2-13 | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| AAP139C4-2-13 | 3/2 Design control — primary reference U.S. Government activity |
| 3M943C4-2-13 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| D792683C2N13 | 5/9 Secondary reference U.S. Government activity |
| VS3258C4-2-13 | 3/2 Design control — primary reference U.S. Government activity |
| 3M943C4-2-13 | 5/2 Secondary reference U.S. Government activity |
| 10122977 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5315-01-128-1648 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 5315-01-128-1648 has 19 manufacturer part numbers on file: 3M943C4-2-13 (Reid Products Inc. Dba Reid Products Inc), 3M943C4-2-13 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M943C4-2-13 (Heartland Precision Fasteners Inc), 3M943C4-2-13 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M943C4-2-13 (Hi-Shear Corporation) and 14 more.
Key specifications for 3M943C4-2-13: Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Second Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; First End Location: THREADED END; Thread Length: 0.405 INCHES NOMINAL IN. 20 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.