The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-978-9381, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Usi Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-978-9381 |
| Primary Part Number | MS16997-63 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Usi Inc |
| Status | CANCELLED |
| Thread Class | 3A A |
| Head Height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Width Across Flats | 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Minimum Yield Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 1.210 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Head Style | FLAT CHAMFER |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 20 |
| Head Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Length | 1.101 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS16997-63 | Usi Inc (USA) |
| 4912852-04 | Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA) |
| 5305PL0652610 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 5305009789381 | E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 58-12180 | Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA) |
| 517156 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| MS16997-63 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 10560246 | General Dynamics Land Systems Canadacorp (CAN) |
| 70072-508 | Sypris Electronics, Llc (USA) |
NSN 5305-00-978-9381 is a Screw,cap,socket Head, manufactured by Usi Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-978-9381 has 9 cross-referenced part numbers: MS16997-63 (Usi Inc), 4912852-04 (Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan), 5305PL0652610 (Jednolity Indeks Materialowy - Uniform Material Index), 5305009789381 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), 58-12180 (Allen Mfg Co Sub of Chicago Pneumatic Tool Co) and 4 more.
There is 1 known substitute for 5305-00-978-9381: 5130-00-137-5132. Verify interchangeability with system specifications before substitution.
Key specifications for MS16997-63: Thread Class: 3A A; Head Height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Width Across Flats: 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-978-9381 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.