The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-355-8888, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-355-8888 |
| Primary Part Number | 3M943C3-1D4 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.1851 INCHES MINIMUM AND 0.1863 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hole Arrangement Style | ONE END DRILLED |
| Thread Length | 0.345 INCHES NOMINAL IN |
| First End Style | SQUARE |
| First Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN |
| Shank Length | 0.470 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | QQ-S-763 COND B&J BCQQ-S-763 COND B&JFDMCA1R MMS265 CAGEC 76301 FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM 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 NOMINAL IN |
| Shoulder Width Across Flats | 0.375 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) |
| Distance From Centerline of Hole to End of Pin | 0.140 INCHES NOMINAL IN |
| 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 |
|---|---|
| 3M943C3-1D4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M943C3-1D4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M943C3-1D4 PRIMARY | Hi-Shear Corporation (USA) |
| 11415C3-1D4 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M943C3-1D4 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M943C3-1D4 | G.s. Precision, Inc. (USA) |
| 3M943C3-1D4 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M943C3-1D4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M943C301D4 | G.s. Precision, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AAP139C3-1D4 | 5/2 Secondary reference U.S. Government activity |
| VS3258C3-1D4 | 3/2 Design control — primary reference U.S. Government activity |
| 10123314 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| D792682C1D4 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| D792682C1D4 | 5/9 Secondary reference U.S. Government activity |
NSN 5315-01-355-8888 is a Pin,shoulder,headless, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-355-8888 has 9 manufacturer part numbers on file: 3M943C3-1D4 (Sps Technologies, Llc Dba PB Fasteners), 3M943C3-1D4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M943C3-1D4 (Hi-Shear Corporation), 11415C3-1D4 (Reid Products Inc. Dba Reid Products Inc), 3M943C3-1D4 (Sps Technologies Ltd, Tj Brooks Division) and 4 more.
Key specifications for 3M943C3-1D4: Shank Diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN; Second Shank Diameter: 0.1851 INCHES MINIMUM AND 0.1863 INCHES MAXIMUM IN; First End Location: THREADED END; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 24 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.