The Pin-Rivet, cataloged under National Stock Number 5320-01-166-7974, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-166-7974 |
| Primary Part Number | HL1051PB-10-11 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Shank Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Grip Length | 0.693 INCHES MAXIMUM IN |
| Width Between Flats | 0.1270 INCHES MINIMUM AND 0.1295 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.6335 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 |
|---|---|
| HL1051PB-10-11 | Howmet Global Fastening Systems Inc (USA) |
| HL1051PB-10-11 | West Coast Aerospace, Inc. (USA) |
| HL1051PB-10-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL1051PB-10-11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL1051PB-10-11 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| HL1051PB-10-11 | Hi-Shear Corporation (USA) |
| HL1051PB-10-11 | Huck International, Inc (USA) |
| HL1051PB-10-11 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HL1051PB-10-11 | 5/2 Secondary reference U.S. Government activity |
| HL21PB-10-11 | 5/9 Secondary reference Huck International, Inc |
| HL21PB-10-11 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HL21PB-10-11 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HL21PB-10-11 | 5/9 Secondary reference U.S. Government activity |
| HL21PB-10-11 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HL21PB-10-11 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| HL21PB-10-11 | 5/9 Secondary reference Hi-Shear Corporation |
| 7693-67104-048 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| BACB30JC10-11 | 3/2 Design control — primary reference U.S. Government activity |
| HL21PB-10-11 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-166-7974 is a Pin-Rivet, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-166-7974 has 8 manufacturer part numbers on file: HL1051PB-10-11 (Howmet Global Fastening Systems Inc), HL1051PB-10-11 (West Coast Aerospace, Inc.), HL1051PB-10-11 (Sps Technologies, Llc Dba PB Fasteners), HL1051PB-10-11 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL1051PB-10-11 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 3 more.
Key specifications for HL1051PB-10-11: Shank Diameter: 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 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.