The Screw,close Tolerance, cataloged under National Stock Number 5305-01-132-6507, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-132-6507 |
| Primary Part Number | ST3M454-5L12 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Fastener Length | 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 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 | 0.625 INCHES MINIMUM AND 0.635 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 |
|---|---|
| BM19037-5-12 | Huck International, Inc (USA) |
| ST3M454-5L12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4025L5-12 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M454-5L12 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4025L5-12 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4025L5-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4025L5-12 | Huck International, Inc (USA) |
| ST3M454-5L12 | Heartland Precision Fasteners Inc (USA) |
| HT4025L5-12 PRIMARY | Hi-Shear Corporation (USA) |
| HT4025L5-12 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| WC4025L-5-12 | West Coast Aerospace, Inc. (USA) |
| 11905-5L12 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4025L5-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M454-5L12 | Houston Precision Fasteners I Lp (USA) |
| HT4025L5-12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| ST3M454-5L12 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4025L5-12 | 5/9 Secondary reference U.S. Government activity |
| HT8140-5-12 | 5/9 Secondary reference U.S. Government activity |
| HT295-5-12 | 5/9 Secondary reference Hi-Shear Corporation |
| BM19037-5-12 | 5/9 Secondary reference U.S. Government activity |
| 106830-5-12 | 3/2 Design control — primary reference U.S. Government activity |
| HT4025L5-12 | 3/2 Design control — primary reference U.S. Government activity |
| HT4025L5-12 | 5/9 Secondary reference U.S. Government activity |
| HT4025L5-12 | 5/9 Secondary reference Sps Technologies Inc |
| 10115329 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-132-6507 is a Screw,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-132-6507 has 15 manufacturer part numbers on file: BM19037-5-12 (Huck International, Inc), ST3M454-5L12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), HT4025L5-12 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M454-5L12 (Fastener Innovation Technology, Inc. Dba F I T), HT4025L5-12 (Sps Technologies Ltd, Tj Brooks Division) and 10 more.
Key specifications for ST3M454-5L12: Fastener Length: 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.