The Collar,pin-Rivet, cataloged under National Stock Number 5320-00-032-4656, 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 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-032-4656 |
| Primary Part Number | HLT371-8AW |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Lubrication | CETYL ALCOHOL |
| Identification Code Color | BLACK |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE COLLAR |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| Collar Inside Diameter | 0.292 INCHES NOMINAL IN |
| Collar Overall Height | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN |
| Collar Outside Diameter | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Heat Treatment | T-6 SOLUTION HEAT TREATED COLLAR |
| Material Document and Classification | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE COLLAR |
| Material Document and Classification | AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE WASHER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Surface Treatment | ANODIZE COLLAR |
| Surface Treatment | CADMIUM AND CHROMATE WASHER |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | ALUMINUM ALLOY 2024 COLLAR |
| Material | STEEL COMP 630 OR STEEL COMP 631 WASHER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| HLT371-8AW | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT371-8AW | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT371-8AW | West Coast Aerospace, Inc. (USA) |
| HLT371-8AW | Huck International, Inc (USA) |
| HLT371-8AW PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT371-8AW | 5/2 Secondary reference U.S. Government activity |
| HLT371-8 | C/1 Advisory reference — outside the item-of-supply concept Hi-Shear Corporation |
| GN512FD4 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5320-00-032-4656 is a Collar,pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-032-4656 has 5 manufacturer part numbers on file: HLT371-8AW (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT371-8AW (Sps Technologies, Llc Dba PB Fasteners), HLT371-8AW (West Coast Aerospace, Inc.), HLT371-8AW (Huck International, Inc), HLT371-8AW (Hi-Shear Corporation).
Key specifications for HLT371-8AW: Lubrication: CETYL ALCOHOL; Identification Code Color: BLACK; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE COLLAR; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE WASHER. 19 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.