The Screw,close Tolerance, cataloged under National Stock Number 5305-01-025-6961, 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 18 specifications, cited from the U.S. Government catalog. The record lists 12 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-025-6961 |
| Primary Part Number | HT4049-4D14 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.176 INCHES MINIMUM AND 1.206 INCHES MAXIMUM IN |
| Thread Length | 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.053 INCHES MINIMUM AND 1.093 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.497 INCHES MINIMUM AND 0.507 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 | F |
| Part Number | Manufacturer |
|---|---|
| ST3M714-4D14 | Heartland Precision Fasteners Inc (USA) |
| HT4049-4D14 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M714-4D14 | Houston Precision Fasteners I Lp (USA) |
| ST3M714-4D14 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M714-4D14 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11931-4D14 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4049-4D14 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| WC4049-4D14 | West Coast Aerospace, Inc. (USA) |
| HT4049-4D14 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4049-4D14 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4049-4D14 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4049-4D14 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M714-4D14 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M714-4D14 | 5/2 Secondary reference U.S. Government activity |
| 10114868 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4049-4D14 | 5/2 Secondary reference U.S. Government activity |
| HT4049-4D14 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| HT4049-4D14 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M714-4D14 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4049-4D14 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4019-4D14 | 3/2 Design control — primary reference U.S. Government activity |
| HT4049-4D14 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-025-6961 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-025-6961 has 12 manufacturer part numbers on file: ST3M714-4D14 (Heartland Precision Fasteners Inc), HT4049-4D14 (Hi-Shear Corporation), ST3M714-4D14 (Houston Precision Fasteners I Lp), ST3M714-4D14 (Fastener Innovation Technology, Inc. Dba F I T), ST3M714-4D14 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 7 more.
Key specifications for HT4049-4D14: Fastener Length: 1.176 INCHES MINIMUM AND 1.206 INCHES MAXIMUM IN; Thread Length: 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.