The Pin-Rivet, cataloged under National Stock Number 5320-01-049-4138, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-049-4138 |
| Primary Part Number | ST3M496-5-8 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.3271 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM IN |
| Fastener Length | 0.951 INCHES MINIMUM AND 0.998 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.1270 INCHES MINIMUM AND 0.1295 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.635 INCHES MAXIMUM 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 |
|---|---|
| HT4008-5-8 | Howmet Global Fastening Systems Inc (USA) |
| ST3M496-5-8 | West Coast Aerospace, Inc. (USA) |
| HT4008-5-8 | Huck International, Inc (USA) |
| ST3M496-5-8 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M496-5-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4008-5-8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M496-5-8 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4008-5-8 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4008-5-8 | 5/9 Secondary reference U.S. Government activity |
| HT4008-5-8 | 5/2 Secondary reference U.S. Government activity |
| HT4008-5-8 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4008-5-8 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-049-4138 is a Pin-Rivet, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-049-4138 has 8 manufacturer part numbers on file: HT4008-5-8 (Howmet Global Fastening Systems Inc), ST3M496-5-8 (West Coast Aerospace, Inc.), HT4008-5-8 (Huck International, Inc), ST3M496-5-8 (The Boeing Company Div Defense), ST3M496-5-8 (Sps Technologies, Llc Dba PB Fasteners) and 3 more.
Key specifications for ST3M496-5-8: Shank Diameter: 0.3271 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM IN; Fastener Length: 0.951 INCHES MINIMUM AND 0.998 INCHES MAXIMUM IN; Head Style: FLUSH COUNTERSUNK; Thread Direction: RIGHT-HAND. 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.