The Screw,close Tolerance, cataloged under National Stock Number 5305-01-101-4835, 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-101-4835 |
| Primary Part Number | HT4068-4-16A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 1.454 INCHES MINIMUM AND 1.484 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 | 0.990 INCHES MINIMUM AND 1.010 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 |
|---|---|
| 3M926-4L16 | Howmet Global Fastening Systems Inc (USA) |
| WC4068-4-16 | West Coast Aerospace, Inc. (USA) |
| HT4068-4-16A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4068-4-16A PRIMARY | Huck International, Inc (USA) |
| HT4068-4-16A PRIMARY | Hi-Shear Corporation (USA) |
| 3M926-4L16 | Heartland Precision Fasteners Inc (USA) |
| HT4068-4-16A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4068-4-16A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4068-4-16A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M926-4L16 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4068-4-16A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4068-4-16A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M926-4L16 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 11883-4L16 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M926-4L16 | Houston Precision Fasteners I Lp (USA) |
| 3M926-4L16 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11883-4-16/11883-4L16 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4068-4-16 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-16A | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-16 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 3M926-4-16 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-16 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-16A | 3/2 Design control — primary reference U.S. Government activity |
| HT4068-4-16A | 5/9 Secondary reference U.S. Government activity |
| 3M926-4L16 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4068-4-16 | 5/9 Secondary reference Hi-Shear Corporation |
NSN 5305-01-101-4835 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-101-4835 has 17 manufacturer part numbers on file: 3M926-4L16 (Howmet Global Fastening Systems Inc), WC4068-4-16 (West Coast Aerospace, Inc.), HT4068-4-16A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HT4068-4-16A (Huck International, Inc), HT4068-4-16A (Hi-Shear Corporation) and 12 more.
Key specifications for HT4068-4-16A: Fastener Length: 1.454 INCHES MINIMUM AND 1.484 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.