The Screw,close Tolerance, cataloged under National Stock Number 5305-01-104-1068, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-104-1068 |
| Primary Part Number | 3M926-4L7 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.892 INCHES MINIMUM AND 0.922 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 | 0.428 INCHES MINIMUM AND 0.448 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 |
|---|---|
| HT4068-4-7A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4068-4-7A | Hi-Shear Corporation (USA) |
| 3M926-4L7 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4068-4-7A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| WC4068-4-7 | West Coast Aerospace, Inc. (USA) |
| HT4068-4-7A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M926-4L7 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| 11883-4-7/11883-4L7 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4068-4-7A | Huck International, Inc (USA) |
| 3M926-4L7 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4068-4-7A | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4068-4-7 | 5/9 Secondary reference Hi-Shear Corporation |
| CHT4068-4-7 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-7A | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-7A | 5/9 Secondary reference U.S. Government activity |
| 3M926-4L7 | 5/9 Secondary reference Huck International, Inc |
| HT4068-4-7A | 5/2 Secondary reference U.S. Government activity |
| HT4068-4-7 | 5/9 Secondary reference U.S. Government activity |
| 3M926-4L7 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| CHT4068-4-7 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 3M926-4-7 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-7 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 3M926-4L7 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
NSN 5305-01-104-1068 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-104-1068 has 11 manufacturer part numbers on file: HT4068-4-7A (Sps Technologies Ltd, Tj Brooks Division), HT4068-4-7A (Hi-Shear Corporation), 3M926-4L7 (The Boeing Company Div Defense), HT4068-4-7A (Sps Technologies, Llc Dba PB Fasteners), WC4068-4-7 (West Coast Aerospace, Inc.) and 6 more.
Key specifications for 3M926-4L7: Fastener Length: 0.892 INCHES MINIMUM AND 0.922 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.