The Pin-Rivet, cataloged under National Stock Number 5320-01-321-5306, 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 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-321-5306 |
| Primary Part Number | HLT51YC-6-10 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.1895 INCHES NOMINAL IN |
| Fastener Length | 0.950 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | CROWN COUTERSUNK GREATER THAN 135 DEGREES |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.625 INCHES MAXIMUM IN |
| Width Between Flats | 0.0806 INCHES NOMINAL 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 | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.3016 INCHES NOMINAL 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 |
|---|---|
| HP4758-3-10 | Heartland Precision Fasteners Inc (USA) |
| HLT51YC-6-10 | Howmet Global Fastening Systems Inc (USA) |
| HLT51YB-6-10 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT51YC-6-10 PRIMARY | Hi-Shear Corporation (USA) |
| HLT51YC-6-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT51YB-6-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT51YC-6-10 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT51YB-6-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT51YB-6-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT51YC-6-10 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT51YB-6-10 | Howmet Global Fastening Systems Inc (USA) |
| HLT51YB-6-10 | Hi-Shear Corporation (USA) |
| HLT51YB-6-10 | Huck International, Inc (USA) |
| HLT51YC-6-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT51YC-6-10 | West Coast Aerospace, Inc. (USA) |
| HLT51YB-6-10 | West Coast Aerospace, Inc. (USA) |
| HLT51YC-6-10 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| MA758-3-10 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| AIC-L-758C3-10 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| ST3M758C3-10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HLT51YB-6-10 | 5/9 Secondary reference U.S. Government activity |
| MA4758-3-10 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 10118859 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HLTYB-6-10 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT51YB-6-10 | 5/9 Secondary reference U.S. Government activity |
| HLT51YC-6-10 | 5/9 Secondary reference U.S. Government activity |
| HLT51YC-6-10 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-321-5306 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-321-5306 has 17 manufacturer part numbers on file: HP4758-3-10 (Heartland Precision Fasteners Inc), HLT51YC-6-10 (Howmet Global Fastening Systems Inc), HLT51YB-6-10 (Sps Technologies Ltd, Tj Brooks Division), HLT51YC-6-10 (Hi-Shear Corporation), HLT51YC-6-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 12 more.
Key specifications for HLT51YC-6-10: Shank Diameter: 0.1895 INCHES NOMINAL IN; Fastener Length: 0.950 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5629 ASSN STD 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.