The Nut,castellated, cataloged under National Stock Number 5310-01-008-7232, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-008-7232 |
| Primary Part Number | GN512GS20 |
| Item Name | Nut,castellated |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL QQ-S-764 TYPE 303,PASSIVATED QQ-P-35,5/8-18 UNJF-3B THD,1.030 IN.NUT DIA,0.891 IN. MIN 0.910 IN. MAX NUT HEIGHT,0.865 IN. MIN 0.875 IN. MAX WIDTH ACROSS TWO FLATS ON CASTELLATIONS,0.900 IN. MIN 0.910 IN. MAX COUNTERBORE DIA 0.430 IN. MIN 0.440 IN. MAX COUNTERBORE DEPTH,90 DEG COUNTERSINK ANGLE,250 DEG F TEMP RATING. 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 |
|---|---|
| GN512GS20 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| CA27030-20 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
NSN 5310-01-008-7232 is a Nut,castellated, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-008-7232 has 1 manufacturer part number on file: GN512GS20 (Northrop Grumman Systems Corporation).
Key specifications for GN512GS20: General Characteristics Item Description: STEEL QQ-S-764 TYPE 303,PASSIVATED QQ-P-35,5/8-18 UNJF-3B THD,1.030 IN.NUT DIA,0.891 IN. MIN 0.910 IN. MAX NUT HEIGHT,0.865 IN. MIN 0.875 IN. MAX WIDTH ACROSS TWO FLATS ON CASTELLATIONS,0.900 IN. MIN 0.910 IN. MAX COUNTERBORE DIA 0.430 IN. MIN 0.440 IN. MAX COUNTERBORE DEPTH,90 DEG COUNTERSINK ANGLE,250 DEG F TEMP RATING. IN. 1 specification is 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.