The Bolt,flush, cataloged under National Stock Number 5340-01-522-9232, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-522-9232 |
| Primary Part Number | HL21PB-6-31 |
| Item Name | Bolt,flush |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Length | 2.263 INCHES NOMINAL OVERALL IN |
| Diameter | 0.189 INCHES NOMINAL SHANK IN |
| Surface Treatment | CADMIUM OVERALL |
| Width | 0.379 INCHES NOMINAL BOLT HEAD IN |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| HL21PB-6-31 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL21PB-6-31 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL21PB-6-31 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 108248-6 | Bae Systems Land & Armaments L.p. (USA) |
| HL21PB-6-31 PRIMARY | Hi-Shear Corporation (USA) |
| HL21PB-6-31 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 108248 | D/9 Drawing number reference only Bae Systems Land & Armaments L.p. |
| HL21PB-6-31 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-522-9232 is a Bolt,flush, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-522-9232 has 6 manufacturer part numbers on file: HL21PB-6-31 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HL21PB-6-31 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL21PB-6-31 (Sps Technologies, Llc Dba PB Fasteners), 108248-6 (Bae Systems Land & Armaments L.p.), HL21PB-6-31 (Hi-Shear Corporation) and 1 more.
Key specifications for HL21PB-6-31: Length: 2.263 INCHES NOMINAL OVERALL IN; Diameter: 0.189 INCHES NOMINAL SHANK IN; Special Features: THREAD PER MIL-S-8879; 0.190-32UNJF-3A A; Surface Treatment: CADMIUM OVERALL. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.