The Nut,plain,single Ball Seat,hexag, cataloged under National Stock Number 5310-01-272-0690, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-272-0690 |
| Primary Part Number | TLN1020-8 |
| Item Name | Nut,plain,single Ball Seat,hexag |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Ball Seat Radius | 0.556 INCHES MINIMUM AND 0.561 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | SINGLE BALL SEAT, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 OR STEEL COMP 4340 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-272-0690 is a Nut,plain,single Ball Seat,hexag, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-272-0690 has 2 manufacturer part numbers on file: TLN1020-8 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST33D58-8 (Lockheed Martin Corp).
Key specifications for TLN1020-8: Width Across Flats: 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Temp Rating: 450.0 FAHRENHEIT MAXIMUM DEGF. 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.