The Pin-Rivet, cataloged under National Stock Number 5320-01-321-8640, 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 20 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-321-8640 |
| Primary Part Number | LS35270S10-38 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.0660 INCHES MINIMUM AND 0.0680 INCHES MAXIMUM IN |
| Fastener Length | 1.592 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Head Style | COUNTERSUNK W/REVERSE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3125 INCHES IN |
| Grip Length | 1.188 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 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Shear Strength | 108000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.4689 INCHES MINIMUM AND 0.4739 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 |
|---|---|
| LS35270S10-38 | Hi-Shear Corporation (USA) |
| LS35270S10-38 | West Coast Aerospace, Inc. (USA) |
| LS35270S10-38 | Huck International, Inc (USA) |
| LS35270S10-38 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| LS35270S10-38 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| LS35270S10-38 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| LS35270S10-38 | 5/2 Secondary reference U.S. Government activity |
| LS35270S10-38 | 3/2 Design control — primary reference U.S. Government activity |
| LS35270S10-38 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
NSN 5320-01-321-8640 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-321-8640 has 6 manufacturer part numbers on file: LS35270S10-38 (Hi-Shear Corporation), LS35270S10-38 (West Coast Aerospace, Inc.), LS35270S10-38 (Huck International, Inc), LS35270S10-38 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), LS35270S10-38 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 1 more.
Key specifications for LS35270S10-38: Shank Diameter: 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Head Height: 0.0660 INCHES MINIMUM AND 0.0680 INCHES MAXIMUM IN; Fastener Length: 1.592 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN. 20 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.