The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-313-0916, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Unicorp.. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-313-0916 |
| Primary Part Number | 4421-M10-F05 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Unicorp. |
| Status | ACTIVE |
| Head Height | 0.088 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.156 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| First Diameter From Head | 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | TRUSS |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.459 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1045 OR STEEL COMP 1050 OR STEEL COMP 1095 OR STEEL COMP 1213 OR STEEL COMP 1115 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1137 OR STEEL COMP 1141 OR STEEL COMP 1144 OR STEEL COMP 1151 OR STEEL COMP 12L14 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1215 OR STEEL COMP 1330 OR STEEL COMP 1548 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 4421-M10-F05 PRIMARY | Unicorp. (USA) |
| Reference | Meaning |
|---|---|
| 6236-4440-3 | C/1 Advisory reference — outside the item-of-supply concept Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| 6236-4440-3 | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
| 10113678 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-313-0916 is a Screw,externally Relieved Body, manufactured by Unicorp., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-313-0916 has 1 manufacturer part number on file: 4421-M10-F05 (Unicorp.).
Key specifications for 4421-M10-F05: Head Height: 0.088 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN; Fastener Length: 0.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.156 INCHES NOMINAL IN. 19 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.