The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-278-1993, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Korfund Dynamics Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-278-1993 |
| Primary Part Number | 3978-2 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Korfund Dynamics Corp |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Head Height | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2 CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Series Designator | UNF |
| Material Document and Classification | SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Width Between Flats | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Fastener Length | 1.010 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN |
| Thread Length | 0.871 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 18 |
| Head Style | HEXAGON |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3978-2 | Korfund Dynamics Corp (USA) |
NSN 5305-01-278-1993 is a Screw,cap,hexagon Head, manufactured by Korfund Dynamics Corp, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-278-1993 has 1 cross-referenced part number: 3978-2 (Korfund Dynamics Corp).
There are 2 known substitutes for 5305-01-278-1993: 5998-01-152-0913, 6145-01-482-0776. Verify interchangeability with system specifications before substitution.
Key specifications for 3978-2: Thread Direction: RIGHT-HAND; Thread Class: 2A A; Head Height: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.