The Screw,close Tolerance, cataloged under National Stock Number 5305-01-043-5749, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-043-5749 |
| Primary Part Number | HT260LB4-10 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Specification/standard Data | 26512-GB510F PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| HT260LB4-10 PRIMARY | Hi-Shear Corporation (USA) |
| HT260LB4-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| T150-4-10 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM19024-4-10 | 5/9 Secondary reference U.S. Government activity |
| T150-4-10 | 5/9 Secondary reference U.S. Government activity |
| BM19024-4-10 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 66584-4-10 | 3/2 Design control — primary reference U.S. Government activity |
| HT8100-4-10 | 5/9 Secondary reference U.S. Government activity |
| HT8100-4-10 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 66584-4-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| GB510F4-10 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5305-01-043-5749 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-043-5749 has 2 manufacturer part numbers on file: HT260LB4-10 (Hi-Shear Corporation), HT260LB4-10 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT260LB4-10: Specification/standard Data: 26512-GB510F PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Special Features: DRY FILM LUBRICANT; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT; Material: TITANIUM ALLOY UNS R54520 OVERALL. 3 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.