The Pin-Rivet, cataloged under National Stock Number 5320-01-591-6974, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-591-6974 |
| Primary Part Number | HLT631YC-5-14 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Shank Diameter | 0.163 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Fastener Length | 1.187 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Grip Length | 0.875 INCHES NOMINAL IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNJC |
| Head Major Diameter | 0.256 INCHES MINIMUM AND 0.262 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 |
|---|---|
| HLT631YC-5-14 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YB-5-14 | Howmet Global Fastening Systems Inc (USA) |
| ST3M758D08-14 | The Boeing Company Div Defense (USA) |
| HLT631YB-5-14 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-5-14 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| HLT631YB-5-14 | 5/2 Secondary reference U.S. Government activity |
| HLT631YB-5-14 | 3/9 Design control — primary reference Sps Technologies Inc |
NSN 5320-01-591-6974 is a Pin-Rivet, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-591-6974 has 5 manufacturer part numbers on file: HLT631YC-5-14 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT631YB-5-14 (Howmet Global Fastening Systems Inc), ST3M758D08-14 (The Boeing Company Div Defense), HLT631YB-5-14 (Sps Technologies, Llc Dba PB Fasteners), HLT631YB-5-14 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for HLT631YC-5-14: Shank Diameter: 0.163 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Fastener Length: 1.187 INCHES NOMINAL IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Head Style: FLUSH COUNTERSUNK. 15 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.