The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-031-4355, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-031-4355 |
| Primary Part Number | ABS20673-1D6 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Head Height | 0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Fastener Length | 0.637 INCHES MINIMUM AND 0.667 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924,CL 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.277 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | WATERTIGHT |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP THREADS |
| Surface Treatment | PASSIVATE OR OXIDE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 304L OR STEEL COMP 316L OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 347 OR STEEL COMP 321 OR STEEL COMP 317 OR STEEL COMP 316 OR STEEL COMP 310 OR STEEL COMP 309 OR STEEL COMP 305 OR STEEL COMP 304 OR STEEL COMP 303SE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.360 INCHES MINIMUM AND 0.370 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 |
|---|---|
| ABS20673-1D6 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 861012-26 | Pattonair Usa Inc Dba Incora Div Uniseal Division (USA) |
| Reference | Meaning |
|---|---|
| ABS20673-1D6 | 5/9 Secondary reference Luhrs C H and Co |
| ABS20673-1D6 | 3/9 Design control — primary reference Litton Systems Inc. Div Navigation Systems Division |
NSN 5305-01-031-4355 is a Screw,cap,socket Head, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-031-4355 has 2 manufacturer part numbers on file: ABS20673-1D6 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 861012-26 (Pattonair Usa Inc Dba Incora Div Uniseal Division).
Key specifications for ABS20673-1D6: Head Height: 0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN; Fastener Length: 0.637 INCHES MINIMUM AND 0.667 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924,CL 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 0.277 INCHES MINIMUM IN. 15 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.