The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-051-0645, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-051-0645 |
| Primary Part Number | R44118D16 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division |
| Status | ACTIVE |
| Width Across Flats | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJS |
| Material Document and Classification | QQ-A-200/3,T42 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 0.338 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 14 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| R44118D16 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| AP391D16 | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| AE16428-16 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| AFP1020D16 | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1934427 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5310PL1768630 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C7557-16 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5310PL0639290 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-051-0645 is a Nut,plain,hexagon, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-051-0645 has 4 manufacturer part numbers on file: R44118D16 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), AP391D16 (Sps Technologies, Llc Dba Airdrome Precision Components), AE16428-16 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), AFP1020D16 (Aerofit, Llc).
Key specifications for R44118D16: Width Across Flats: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNJS; Material Document and Classification: QQ-A-200/3,T42 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 14 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.