The Pin-Rivet, cataloged under National Stock Number 5320-00-367-6740, 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 18 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5320-00-367-6740 |
| Primary Part Number | HLT631YB-8-14 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Fastener Length | 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 258 FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OR QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.880 INCHES MAXIMUM IN |
| Width Between Flats | 0.095 INCHES MINIMUM AND 0.097 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 |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.390 INCHES MINIMUM AND 0.395 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 |
|---|---|
| HL645YE-8-14 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC-L-645-8-14 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL645YE-8-14 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YB-8-14 PRIMARY | Hi-Shear Corporation (USA) |
| HL645YE-8-14 | Huck International, Inc (USA) |
| HLT631YC-8-14 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL645YE-8-14 | Heartland Precision Fasteners Inc (USA) |
| HLT631YC-8-14 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL645YE-8-14 | Hi-Shear Corporation (USA) |
| HLT631YC-8-14 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT631YB-8-14 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YC-8-14 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YB-8-14 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YB-8-14 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT631YC-8-14 PRIMARY | Hi-Shear Corporation (USA) |
| HL645YE-8-14 | West Coast Aerospace, Inc. (USA) |
| HP4758D4-14 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT631YB-8-14 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| MA4456-4-14 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HLT631YB-8-14 | 3/2 Design control — primary reference U.S. Government activity |
| HL645YE-8-14 | 5/2 Secondary reference U.S. Government activity |
| HL645LL8-14 | 5/9 Secondary reference U.S. Government activity |
| ST3M758D4-14 | 5/9 Secondary reference The Boeing Company Div Defense |
| HL645YE-8-14 | 5/9 Secondary reference U.S. Government activity |
| AIC-L-645-4-14 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT631YC-8-14 | 3/2 Design control — primary reference U.S. Government activity |
| HL645LL-8-14 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M456C4-14 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
| HL645LL8-14 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5320-00-367-6740 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-367-6740 has 18 manufacturer part numbers on file: HL645YE-8-14 (Sps Technologies, Llc Dba PB Fasteners), AIC-L-645-8-14 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL645YE-8-14 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HLT631YB-8-14 (Hi-Shear Corporation), HL645YE-8-14 (Huck International, Inc) and 13 more.
1 possible match (shared part number, not a government interchangeability claim): 5320-01-624-6717. Verify interchangeability with system specifications before substitution.
Key specifications for HLT631YB-8-14: Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Fastener Length: 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 258 FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OR QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.