The Screw,close Tolerance, cataloged under National Stock Number 5305-01-132-6509, 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 17 specifications, cited from the U.S. Government catalog. The record lists 19 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-132-6509 |
| Primary Part Number | ST3M454-5L15 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.454 INCHES MINIMUM AND 1.484 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 | 0.928 INCHES MINIMUM AND 0.948 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 |
|---|---|
| ST3M454-5L15 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M454-5L15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4025L5-15 PRIMARY | Hi-Shear Corporation (USA) |
| HT4025L5-15 PRIMARY | Huck International, Inc (USA) |
| ST3M454-5L15 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M454-5L15 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M454-5L15 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M454-5L15 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M454-5L15 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4025L5-15 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11905-5L15 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4025L5-15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| WC4025L-5-15 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M454-5L15 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4025L5-15 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M454-5L15 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M454-5L15 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| HT4025L5-15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4025L5-15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| ST3M454-5L15 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT8140-5-15 | 5/9 Secondary reference U.S. Government activity |
| 10115331 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4025L5-15 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M454-5L15 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M454-5L15 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-132-6509 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-132-6509 has 19 manufacturer part numbers on file: ST3M454-5L15 (Hi-Shear Corporation), ST3M454-5L15 (Howmet Global Fastening Systems Inc), HT4025L5-15 (Hi-Shear Corporation), HT4025L5-15 (Huck International, Inc), ST3M454-5L15 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 14 more.
Key specifications for ST3M454-5L15: Fastener Length: 1.454 INCHES MINIMUM AND 1.484 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.