The Screw,close Tolerance, cataloged under National Stock Number 5305-01-510-6740, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-510-6740 |
| Primary Part Number | HT4049-7D44 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Fastener Length | 3.203 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.453 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.750 INCHES NOMINAL IN |
| Grip Diameter | 0.436 INCHES MINIMUM AND 0.437 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 | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.085 INCHES MINIMUM AND 3.090 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.880 INCHES MINIMUM AND 0.890 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 |
|---|---|
| ST3M714-7D44 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4049-7D44 | Huck International, Inc (USA) |
| HT4049-7D44 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4049-7D44 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4049-7D44 | Hi-Shear Corporation (USA) |
| 11931-7D44 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M714-7D44 | Houston Precision Fasteners I Lp (USA) |
| WC4049-7D44 | West Coast Aerospace, Inc. (USA) |
| HT4049-7D44 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4049-7D44 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4049-7D44 | Howmet Global Fastening Systems Inc (USA) |
| ST3M714-7D44 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M714-7D44 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M714-7D44 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HT4049-7D44 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HT4049-7D44 | 3/2 Design control — primary reference U.S. Government activity |
| HT4049-7D44 | 5/2 Secondary reference U.S. Government activity |
| HT4049-7D44 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-510-6740 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-510-6740 has 15 manufacturer part numbers on file: ST3M714-7D44 (Fastener Innovation Technology, Inc. Dba F I T), HT4049-7D44 (Huck International, Inc), HT4049-7D44 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HT4049-7D44 (Sps Technologies Ltd, Tj Brooks Division), HT4049-7D44 (Hi-Shear Corporation) and 10 more.
Key specifications for HT4049-7D44: Fastener Length: 3.203 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.453 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN. 19 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.