The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-141-7940, 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 20 specifications, cited from the U.S. Government catalog. The record lists 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-141-7940 |
| Primary Part Number | 3M943T4-2-2 |
| 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 | SQUARE END |
| Second End Taper Angle | 45.0 DEGREES NOMINAL |
| 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 | MIL-T-9047 6AL-4V MIL SPEC SINGLE MATERIAL RESPONSE OVERALL V |
| Second End Taper Length | 0.250 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Second Shank Length | 0.500 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.438 INCHES NOMINAL IN |
| Second End Tip Radius | 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Second End Style | CHAMFERED |
| Thread Class | 3A A |
| Material | TITANIUM ALLOY UNS R56400 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 |
|---|---|
| 3M943T4-2-2 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M943T4-2-2 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943T4-2-2 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M943T4-2-2 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11415T4-2-2 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943T4-2-2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943T4-2-2 | Saturn Fasteners Inc (USA) |
| 3M943T4-2-2 | Hi-Shear Corporation (USA) |
| 3M943T4-2-2 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M943T4-2-2 | G.s. Precision, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10123135 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| D792683T2N2 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS3258T4-2-2 | 5/2 Secondary reference U.S. Government activity |
| AAP139T4-2-2 | 5/2 Secondary reference U.S. Government activity |
| D792683T2N2 | 5/9 Secondary reference U.S. Government activity |
NSN 5315-01-141-7940 is a Pin,shoulder,headless, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-141-7940 has 10 manufacturer part numbers on file: 3M943T4-2-2 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 3M943T4-2-2 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M943T4-2-2 (The Boeing Company Div Defense), 3M943T4-2-2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 11415T4-2-2 (Reid Products Inc. Dba Reid Products Inc) and 5 more.
Key specifications for 3M943T4-2-2: 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: SQUARE END; Second End Taper Angle: 45.0 DEGREES NOMINAL. 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.