The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-965-6840, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-965-6840 |
| Primary Part Number | A145-4510942-68 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace |
| Status | ACTIVE |
| Head Height | 0.749 INCHES MINIMUM AND 0.813 INCHES MAXIMUM IN |
| Fastener Length | 4.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 2.750 INCHES MINIMUM AND 3.107 INCHES MAXIMUM IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 120000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 7 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| A145-4510942-68 | Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| MS90728-280 | 5/9 Secondary reference U.S. Government activity |
| 9C-02899 | C/1 Advisory reference — outside the item-of-supply concept Wausau Equipment Company Llc Dba Schmidt Engineering & Equipment Inc Div Wausau Equipment Llc |
| B1821BH125C475N | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-965-6840 is a Screw,cap,hexagon Head, manufactured by Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-965-6840 has 1 manufacturer part number on file: A145-4510942-68 (Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace).
Key specifications for A145-4510942-68: Head Height: 0.749 INCHES MINIMUM AND 0.813 INCHES MAXIMUM IN; Fastener Length: 4.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 2.750 INCHES MINIMUM AND 3.107 INCHES MAXIMUM IN. 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.