The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-133-2174, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-133-2174 |
| Primary Part Number | 6148-SS-2528-7 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| Status | ACTIVE |
| Head Height | 0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM0.266 INCHES MAXIMUM IN |
| Fastener Length | 0.922 INCHES MINIMUM AND 0.922 INCHES MINIMUM AND 0.954 INCHES MAXIMUM0.954 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.359 INCHES MINIMUM AND 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM0.391 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALLASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| First Diameter From Head | 0.170 INCHES MINIMUM AND 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM0.180 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES0.250 INCHES IN |
| Head Style | KNURLED NO. 4KNURLED NO. 4 |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.553 INCHES MINIMUM AND 0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM0.573 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 11 |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Internal Drive Style | SLOTSLOT |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 2828 |
| Material | STEEL COMP 203EZ OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303MA OR STEEL COMP 303CU OR STEEL COMP 303 PLUS X OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 416 PLUS X OR STEEL COMP 430F OR STEEL COMP M1020 OVERALL |
| Thread Series Designator | UNFUNF |
| Head Diameter | 0.557 INCHES MINIMUM AND 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM0.567 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 |
|---|---|
| 6148-SS-2528-7 PRIMARY | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 6148-SS-2528-7 | 3/9 Design control — primary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
| 6148SS2528-7 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-01-133-2174 is a Screw,externally Relieved Body, manufactured by Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-133-2174 has 1 manufacturer part number on file: 6148-SS-2528-7 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for 6148-SS-2528-7: Head Height: 0.234 INCHES MINIMUM AND 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM0.266 INCHES MAXIMUM IN; Fastener Length: 0.922 INCHES MINIMUM AND 0.922 INCHES MINIMUM AND 0.954 INCHES MAXIMUM0.954 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.359 INCHES MINIMUM AND 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM0.391 INCHES MAXIMUM IN. 18 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.