The Nut,plain,round, cataloged under National Stock Number 5310-01-055-8816, is classified within Federal Supply Class 5310 (Nuts and Washers) 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 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-055-8816 |
| Primary Part Number | 8155-A-0440-10A |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| Status | ACTIVE |
| Surface Treatment Document and Classification | 1200 FSCM 06540 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-A-225/3,T3 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/10,T9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/8,T6 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-200/9,T6 FED SPEC 4TH MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Nut Diameter | 0.250 INCHES NOMINAL IN |
| Nut Thickness | 0.375 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 40 |
| Material | ALUMINUM ALLOY 2011 OR ALUMINUM ALLOY 6262 OR ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6063 OVERALL |
| 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 |
|---|---|
| 8155-A-0440-10A PRIMARY | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 40-005240-01 | 5/9 Secondary reference Interlink Communications Inc |
| 3TH-BRACC07000 | C/1 Advisory reference — outside the item-of-supply concept Woodstream Corp Fenwick Products Inc Div |
| TH-BRACC07000 | C/1 Advisory reference — outside the item-of-supply concept Comtec Information Systems Inc Digitronics Div |
| 982AS155-1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 8155-A-0440-10A | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
NSN 5310-01-055-8816 is a Nut,plain,round, manufactured by Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-055-8816 has 1 manufacturer part number on file: 8155-A-0440-10A (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for 8155-A-0440-10A: Surface Treatment Document and Classification: 1200 FSCM 06540 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: QQ-A-225/3,T3 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/10,T9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/8,T6 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-200/9,T6 FED SPEC 4TH MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 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.