The Screw,close Tolerance, cataloged under National Stock Number 5305-01-539-6554, 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 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-539-6554 |
| Primary Part Number | HT4069-4-10A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Head Height | 0.070 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Fastener Length | 1.094 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-DTL-83488 TY 2 CLS 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5662 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.625 INCHES NOMINAL IN |
| Grip Diameter | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| 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 | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.389 INCHES MINIMUM AND 0.394 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 |
|---|---|
| 3M927-4L10 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4069-4-10A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4069-4-10A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M927-4L10 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC4069-4-10 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4069-4-10A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4069-4-10A PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3M927-4L10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4069-4-10A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-539-6554 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-539-6554 has 7 manufacturer part numbers on file: 3M927-4L10 (Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc), HT4069-4-10A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4069-4-10A (Sps Technologies, Llc Dba PB Fasteners), 3M927-4L10 (Fastener Innovation Technology, Inc. Dba F I T), WC4069-4-10 (West Coast Aerospace, Inc.) and 2 more.
Key specifications for HT4069-4-10A: Head Height: 0.070 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN; Fastener Length: 1.094 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-DTL-83488 TY 2 CLS 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.469 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.