The Screw,close Tolerance, cataloged under National Stock Number 5305-01-450-6883, is classified within Federal Supply Class 5305 (Screws) 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 5 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-450-6883 |
| Primary Part Number | HT4025L6-9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Head Height | 0.160 INCHES NOMINAL IN |
| Fastener Length | 1.203 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.641 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.562 INCHES NOMINAL IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.752 INCHES MINIMUM AND 0.762 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 |
|---|---|
| ST3M454-6L9 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 11905-6L9 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4025L6-9 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| WC4025L-6-9 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4025L6-9 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4025L6-9 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| ST3M454-6L9 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M454-6L9 | 5/2 Secondary reference U.S. Government activity |
| ST3M454-6L9 | 5/9 Secondary reference Sps Technologies Inc |
| HT4025L6-9 | 5/2 Secondary reference U.S. Government activity |
| 10163816 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HLT4025L6-9 | C/1 Advisory reference — outside the item-of-supply concept Forsyth Technical Community College |
| HT4025L6-9 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HT4025L6-9 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
NSN 5305-01-450-6883 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-450-6883 has 5 manufacturer part numbers on file: ST3M454-6L9 (Sps Technologies Ltd, Tj Brooks Division), 11905-6L9 (Reid Products Inc. Dba Reid Products Inc), HT4025L6-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), WC4025L-6-9 (West Coast Aerospace, Inc.), HT4025L6-9 (Hi-Shear Corporation).
Key specifications for HT4025L6-9: Head Height: 0.160 INCHES NOMINAL IN; Fastener Length: 1.203 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.641 INCHES NOMINAL 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.