The Pin-Rivet, cataloged under National Stock Number 5320-01-045-3731, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-045-3731 |
| Primary Part Number | HL644YE-8-16 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Fastener Length | 1.385 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 258,FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 1.005 INCHES MAXIMUM IN |
| Width Between Flats | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | 0.387 INCHES MINIMUM AND 0.412 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 |
|---|---|
| HL644YE-8-16 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL644YE-8-16 PRIMARY | Hi-Shear Corporation (USA) |
| HL644YE-8-16 | Howmet Global Fastening Systems Inc (USA) |
| HL644YE-8-16 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL644YE-8-16 | West Coast Aerospace, Inc. (USA) |
| HL644YE-8-16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL644YE-8-16 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| MA4457-4-16 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HL644LL-8-16 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HL644YE-8-16 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
| HL644YE-8-16 | 5/2 Secondary reference U.S. Government activity |
| HL644YE-8-16 | 5/9 Secondary reference U.S. Government activity |
| HL644LL-8-16 | 5/9 Secondary reference Hi-Shear Corporation |
| HL644LL-8-16 | 5/9 Secondary reference U.S. Government activity |
| ST3M457C4-16 | 5/9 Secondary reference The Boeing Company Div Defense |
| AIC-L-644-8-16 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
NSN 5320-01-045-3731 is a Pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-045-3731 has 7 manufacturer part numbers on file: HL644YE-8-16 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HL644YE-8-16 (Hi-Shear Corporation), HL644YE-8-16 (Howmet Global Fastening Systems Inc), HL644YE-8-16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL644YE-8-16 (West Coast Aerospace, Inc.) and 2 more.
Key specifications for HL644YE-8-16: Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Head Height: 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN; Fastener Length: 1.385 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN. 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.