The Pin-Rivet, cataloged under National Stock Number 5320-01-231-7545, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-231-7545 |
| Primary Part Number | HLT53YB-12-21 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 1.847 INCHES MINIMUM AND 1.867 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | CROWN COUTERSUNK GREATER THAN 135 DEGREES |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 1.317 INCHES MAXIMUM IN |
| Width Between Flats | 0.1582 INCHES MINIMUM AND 0.1617 INCHES MAXIMUM IN |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.7556 INCHES MINIMUM AND 0.7604 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 |
|---|---|
| HLT53YC-12-21 | Hi-Shear Corporation (USA) |
| HLT53YB-12-21 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT53YC-12-21 | West Coast Aerospace, Inc. (USA) |
| HLT53YB-12-21 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HP4760-6-21 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| AIC-L-760C6-21 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT53YB-12-21 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT53YB-12-21 | Hi-Shear Corporation (USA) |
| HLT53YC-12-21 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT53YC-12-21 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT53YB-12-21 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT53YC-12-21 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M760C6-21 PRIMARY | The Boeing Company Div Defense (USA) |
| HLT53YC-12-21 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT53YB-12-21 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HLT53YB-12-21 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT53YC-12-21 | 5/2 Secondary reference U.S. Government activity |
| ST3M760C6-21 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HLT53YB-12-21 | 3/2 Design control — primary reference U.S. Government activity |
| MA4760-6-21 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HLT53YC-12-21 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT53YC-12-21 | 5/9 Secondary reference U.S. Government activity |
| HLT53YB-12-21 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-231-7545 is a Pin-Rivet, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-231-7545 has 15 manufacturer part numbers on file: HLT53YC-12-21 (Hi-Shear Corporation), HLT53YB-12-21 (Sps Technologies, Llc Dba PB Fasteners), HLT53YC-12-21 (West Coast Aerospace, Inc.), HLT53YB-12-21 (Sps Technologies Ltd, Tj Brooks Division), HP4760-6-21 (Heartland Precision Fasteners Inc) and 10 more.
Key specifications for HLT53YB-12-21: Shank Diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 1.847 INCHES MINIMUM AND 1.867 INCHES MAXIMUM IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 16 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.