The Nut,plain,round, cataloged under National Stock Number 5310-00-638-1124, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-638-1124 |
| Primary Part Number | 3-160358-78 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-18411,CLASS 2 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Size | 1.375 INCHES IN |
| Thread Quantity Per Inch | 12 |
| Thread Series | UNF |
| Drive Point Depth | 0.188 INCHES NOMINAL IN |
| Thread Class | 3B |
| Nut Thickness | 0.591 INCHES NOMINAL IN |
| Material | STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Nut Diameter | 1.750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3-160358-78 PRIMARY | Naval Sea Systems Command (USA) |
| A1023PC78 | Alfa Laval Inc (USA) |
| 21621 | Alfa Laval Inc (USA) |
| 99121621 | Alfa Laval Inc (USA) |
| 5310PL0660606 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 5310-00-638-1124 is a Nut,plain,round, manufactured by Naval Sea Systems Command, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-638-1124 has 5 cross-referenced part numbers: 3-160358-78 (Naval Sea Systems Command), A1023PC78 (Alfa Laval Inc), 21621 (Alfa Laval Inc), 99121621 (Alfa Laval Inc), 5310PL0660606 (Jednolity Indeks Materialowy - Uniform Material Index).
There are 5 known substitutes for 5310-00-638-1124: 5977-00-381-0215, 5310-00-483-2276, 5970-01-155-9418 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3-160358-78: Material Document and Classification: MIL-S-18411,CLASS 2 MIL SPEC ALL MATERIAL RESPONSES OVERALL; Nominal Thread Size: 1.375 INCHES IN; Thread Quantity Per Inch: 12; Thread Series: UNF. 13 total characteristics are documented in the Federal Logistics Information System.