The Screw,machine, cataloged under National Stock Number 5305-00-545-6676, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-545-6676 |
| Primary Part Number | 51B507C06-12B |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Screw Surface Treatment | OXIDE |
| Fastener Length | 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.600 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | IRON ALLOY 660 |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE SET |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNJC |
| Head Diameter | 0.231 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | FP-22 FSCM 76823 MFR REF SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 51B507C06-12B PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 51B507C06-12B PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 51B507C06-12B PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 51B507C06-12B PRIMARY | Hi-Shear Corporation (USA) |
| 51B507C06-12B PRIMARY | Huck International, Inc (USA) |
| 51B507C06-12B | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 51B507C06-12B PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 51B507C06-12B | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-545-6676 is a Screw,machine, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-545-6676 has 7 manufacturer part numbers on file: 51B507C06-12B (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 51B507C06-12B (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 51B507C06-12B (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 51B507C06-12B (Hi-Shear Corporation), 51B507C06-12B (Huck International, Inc) and 2 more.
Key specifications for 51B507C06-12B: Screw Surface Treatment: OXIDE; Fastener Length: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.600 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN. 16 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.