The Pin-Rivet, cataloged under National Stock Number 5320-01-452-5956, 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 18 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-452-5956 |
| Primary Part Number | HLT631YB-5-8 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP AND SOLID FILM |
| Fastener Length | 0.6195 INCHES MINIMUM AND 0.6295 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Grip Length | 0.3075 INCHES MINIMUM AND 0.3175 INCHES MAXIMUM 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 | 0.2564 INCHES MINIMUM AND 0.2612 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 | Y |
| Part Number | Manufacturer |
|---|---|
| HLT631YC-5-8 | West Coast Aerospace, Inc. (USA) |
| HLT631YB-5-8 PRIMARY | Hi-Shear Corporation (USA) |
| AIC-L-771-5-8 | The Boeing Company Div Defense (USA) |
| HP4758D08-8 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT631YB-5-8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M758D08-8 | The Boeing Company Div Defense (USA) |
| HLT631YC-5-8 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Inc |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept West Coast Aerospace, Inc. |
| HLT631YB-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Inc |
| HP758D08-8 | C/1 Advisory reference — outside the item-of-supply concept Heartland Precision Fasteners Inc |
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Hi-Shear Corporation |
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT631YC-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| HLT631YC-5-8 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-452-5956 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-452-5956 has 7 manufacturer part numbers on file: HLT631YC-5-8 (West Coast Aerospace, Inc.), HLT631YB-5-8 (Hi-Shear Corporation), AIC-L-771-5-8 (The Boeing Company Div Defense), HP4758D08-8 (Heartland Precision Fasteners Inc), HLT631YB-5-8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
Key specifications for HLT631YB-5-8: Shank Diameter: 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP AND SOLID FILM; Fastener Length: 0.6195 INCHES MINIMUM AND 0.6295 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.