The Pin-Rivet, cataloged under National Stock Number 5320-00-256-7699, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-00-256-7699 |
| Primary Part Number | HL31-5-2 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.163 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Fastener Length | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 258,FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Grip Length | 0.130 INCHES MAXIMUM IN |
| Width Between Flats | 0.079 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Material | STEEL COMP 431 OVERALL |
| Thread Series Designator | UNJC |
| Head Major Diameter | 0.256 INCHES MINIMUM AND 0.261 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 |
|---|---|
| HL31-5-2 | Howmet Global Fastening Systems Inc (USA) |
| HL31-5-2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL31-5-2 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| R2232P35-2 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Aerostructures |
| HL31-5-2 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-00-256-7699 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-256-7699 has 3 manufacturer part numbers on file: HL31-5-2 (Howmet Global Fastening Systems Inc), HL31-5-2 (Sps Technologies, Llc Dba PB Fasteners), HL31-5-2 (Hi-Shear Corporation).
Key specifications for HL31-5-2: Shank Diameter: 0.163 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Fastener Length: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 258,FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 17 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.