The Screw,close Tolerance, cataloged under National Stock Number 5305-01-104-8394, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-104-8394 |
| Primary Part Number | HT4068-4-10A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 101.0 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) |
| 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 |
|---|---|
| WC4068-4-10 | West Coast Aerospace, Inc. (USA) |
| HT4068-4-10A PRIMARY | Huck International, Inc (USA) |
| HT4068-4-10A | Howmet Global Fastening Systems Inc (USA) |
| 3M926-4L10 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4068-4-10A | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| HT4068-4-10A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M926-4L10 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4068-4-10A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4068-4-10A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M926-4L10 | Heartland Precision Fasteners Inc (USA) |
| HT4068-4-10A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4068-4-10A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M926-4L10 | Houston Precision Fasteners I Lp (USA) |
| 3M926-4L10 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4068-4-10A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4068-4-10A | Hi-Shear Corporation (USA) |
| 11883-4-10/11883-4L10 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M926-4-10 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-10A | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-10 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-10A | 5/2 Secondary reference U.S. Government activity |
| HT4068-4-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-4-10 | 5/9 Secondary reference Hi-Shear Corporation |
| 3A926-4L10 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-10A | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-104-8394 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-104-8394 has 17 manufacturer part numbers on file: WC4068-4-10 (West Coast Aerospace, Inc.), HT4068-4-10A (Huck International, Inc), HT4068-4-10A (Howmet Global Fastening Systems Inc), 3M926-4L10 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), HT4068-4-10A (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 12 more.
Key specifications for HT4068-4-10A: Fastener Length: 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 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.