The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-313-4310, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-313-4310 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 1.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 CL.2 WITH CHROMATE FED STD ALL TREATMENT RESPONSES OVERALL |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTM-A193 GRADE B7 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 8913B55A | 3/1 Design control — primary reference Ashcroft Inc Dba Heise |
| 8913B55A | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 8910W-1/2-738PC40 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 8910W-1/2-738PC40 | 5/1 Secondary reference Ashcroft Inc Dba Heise |
NSN 5305-01-313-4310 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-313-4310: Fastener Length: 1.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 CL.2 WITH CHROMATE FED STD ALL TREATMENT RESPONSES OVERALL; Criticality Code Justification: ZZZY; Material Document and Classification: ASTM-A193 GRADE B7 ASSN STD ALL MATERIAL RESPONSES OVERALL. 12 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.