The Screw,close Tolerance, cataloged under National Stock Number 5305-01-104-1069, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-104-1069 |
| Primary Part Number | HT4068-4-8A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 0.954 INCHES MINIMUM AND 0.984 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 | 0.490 INCHES MINIMUM AND 0.510 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 |
|---|---|
| HT4068-4-8A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4068-4-8A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M926-4L8 | Heartland Precision Fasteners Inc (USA) |
| WC4068-4-8 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 3M926-4L8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4068-4-8A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M926-4L8 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M926-4L8 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| 11883-4-8/11883-4L8 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M926-4L8 | Houston Precision Fasteners I Lp (USA) |
| 3M926-4L8 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M926-4L8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M926-4L8 PRIMARY | Space Instruments Inc (USA) |
| HT4068-4-8A PRIMARY | Hi-Shear Corporation (USA) |
| 3M926-4L8 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M926-4L8 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4068-4-8 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-8 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-8A | 5/9 Secondary reference U.S. Government activity |
| 3M926-4L8 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4068-4-8 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-4-8A | 5/2 Secondary reference U.S. Government activity |
| 3M926-4-8 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-8A | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-4-8 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-8A | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| HT4068-4-8 | 5/9 Secondary reference Hi-Shear Corporation |
NSN 5305-01-104-1069 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-104-1069 has 16 manufacturer part numbers on file: HT4068-4-8A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HT4068-4-8A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M926-4L8 (Heartland Precision Fasteners Inc), WC4068-4-8 (West Coast Aerospace, Inc.), 3M926-4L8 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 11 more.
Key specifications for HT4068-4-8A: Fastener Length: 0.954 INCHES MINIMUM AND 0.984 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.