The Screw,close Tolerance, cataloged under National Stock Number 5305-00-613-8274, 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 18 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-613-8274 |
| Primary Part Number | HT4028L4-24 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 1.954 INCHES MINIMUM AND 1.984 INCHES MAXIMUM IN |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4928 ASSN STD 1ST MATERIAL RESPONSE OR AMS 4967 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.390 INCHES MINIMUM AND 0.395 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 |
|---|---|
| ST3M466V4L24-1 | Heartland Precision Fasteners Inc (USA) |
| HT4028L4-24 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M466V4L24-1 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M466V4L24-1 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M466V4L24-1 | Camcar Llc Div Camcar Llc (USA) |
| HT4028L4-24 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M466V4L24-1 | Linread Northbridge (aircraft Product Division) (GBR) |
| 11909V4L24-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4028L4-24 | Howmet Global Fastening Systems Inc (USA) |
| HT4028L4-24 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M466V4L24-1 | Saturn Fasteners Inc (USA) |
| HT4028L4-24 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| WC4028L4-24 | West Coast Aerospace, Inc. (USA) |
| ST3M466V4L24-1 | Houston Precision Fasteners I Lp (USA) |
| HT4028L4-24 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10125406 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4028L4-24 | 5/9 Secondary reference U.S. Government activity |
| ST3M466V4L24-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M466V4L24-1 | 5/2 Secondary reference U.S. Government activity |
| HT4028L4-24 | 3/2 Design control — primary reference U.S. Government activity |
| HT4028L4-24 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HT4028L4-24 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-613-8274 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-613-8274 has 15 manufacturer part numbers on file: ST3M466V4L24-1 (Heartland Precision Fasteners Inc), HT4028L4-24 (Sps Technologies, Llc Dba PB Fasteners), ST3M466V4L24-1 (Fastener Innovation Technology, Inc. Dba F I T), ST3M466V4L24-1 (Sps Technologies Ltd, Tj Brooks Division), ST3M466V4L24-1 (Camcar Llc Div Camcar Llc) and 10 more.
Key specifications for HT4028L4-24: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 1.954 INCHES MINIMUM AND 1.984 INCHES MAXIMUM IN; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN. 18 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.