The Pin-Rivet, cataloged under National Stock Number 5320-01-045-9633, 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 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-045-9633 |
| Primary Part Number | ST3M501-3-4 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.2021 INCHES MINIMUM AND 0.2026 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Fastener Length | 0.565 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.255 INCHES MAXIMUM IN |
| Width Between Flats | 0.0791 INCHES MINIMUM AND 0.0806 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.295 INCHES MINIMUM AND 0.315 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 |
|---|---|
| ST3M501-3-4 PRIMARY | The Boeing Company Div Defense (USA) |
| HL744LL-6-4 | Hi-Shear Corporation (USA) |
| HL744LL-6-4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL744LL6-4 | Huck International, Inc (USA) |
| HL744LL6-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC-L-744LL6-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL744LL6-4 | Howmet Global Fastening Systems Inc (USA) |
| HL744LL6-4 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MA4501-3-4 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HL744LL6-4 | 5/9 Secondary reference U.S. Government activity |
| HL744LL6-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-045-9633 is a Pin-Rivet, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-045-9633 has 8 manufacturer part numbers on file: ST3M501-3-4 (The Boeing Company Div Defense), HL744LL-6-4 (Hi-Shear Corporation), HL744LL-6-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HL744LL6-4 (Huck International, Inc), HL744LL6-4 (Sps Technologies, Llc Dba PB Fasteners) and 3 more.
1 possible match (shared part number, not a government interchangeability claim): 5320-01-145-8441. Verify interchangeability with system specifications before substitution.
Key specifications for ST3M501-3-4: Shank Diameter: 0.2021 INCHES MINIMUM AND 0.2026 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Head Height: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Fastener Length: 0.565 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN. 18 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.