The Screw,close Tolerance, cataloged under National Stock Number 5305-01-697-4740, 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 19 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-697-4740 |
| Primary Part Number | 3M707-4-21-6 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Head Height | 0.070 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Fastener Length | 1.672 INCHES MINIMUM AND 1.702 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-3-707 MANUFACTURERS STANDARD |
| Grip Length | 1.302 INCHES MINIMUM AND 1.322 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 | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3898 INCHES MINIMUM AND 0.3948 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 |
|---|---|
| 3M707-4-21-6 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M707-4-21-6 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M707-4-21-6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HT4041-4-21-6 PRIMARY | Huck International, Inc (USA) |
| HT4041-4-21-6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4041-4-21-6 PRIMARY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M707-4-21-6 | The Boeing Company Div Defense (USA) |
| HT4041-4-21-6 PRIMARY | Hi-Shear Corporation (USA) |
| 3M707-4-21-6 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| WC4041-4-21-6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 11873-4-21-6 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4041-4-21-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4041-4-21-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4041-4-21-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4041-4-21-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-697-4740 is a Screw,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-697-4740 has 14 manufacturer part numbers on file: 3M707-4-21-6 (Fastener Innovation Technology, Inc. Dba F I T), 3M707-4-21-6 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 3M707-4-21-6 (Heartland Precision Fasteners Inc), HT4041-4-21-6 (Huck International, Inc), HT4041-4-21-6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 9 more.
Key specifications for 3M707-4-21-6: Head Height: 0.070 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN; Fastener Length: 1.672 INCHES MINIMUM AND 1.702 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.375 INCHES NOMINAL 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.