The Thumbnut Assembly, cataloged under National Stock Number 5826-01-111-9699, is classified within Federal Supply Class 5826 (Radio Navigation Equipment, Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5826-01-111-9699 |
| Primary Part Number | 621-2528-001 |
| Item Name | Thumbnut Assembly |
| FSC / FSG | 5826 / 58 — Radio Navigation Equipment, Airborne |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| General Characteristics Item Description | AL,2024 TEM T351,0.750 PORM 0.002 IN. DIA,PER QQ-A-225/6; COMPRESSION SPRING,P/N 757-3937-001 AND BALL,P/N 309-0019-000 PLACED IN THUMBNUT,P/N 621-2528-002 FOUR PLACES AND SECURED BY RETAINER INSERT,P/N 757-3933-001; FOUR 0.128 IN. MIN,0.131 IN. MAX DIA HOLES ON 0.528 IN. MIN,0.534 IN. MAX DIA BOLT CIRCLE CONCENTRIC WITHIN 0.003 IN. DIA TO CENTER HOLE WITH 0.328 IN. MIN,0.329 IN. MAX DIA,COUNTERSUNK 88.0 DEG MIN,92.0 DEG MAX TO 0.365 IN. MIN,0.385 IN. MAX DIA; THUMBNUT FLATTED TO 0.500 IN.; O/A THK 0.437 IN.; THUMBNUT FINISH ANODIC COATING TYPE I OR II PER MIL-A-8625 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 |
|---|---|
| 621-2528-001 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 621-2528 | D/9 Drawing number reference only Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5826-01-111-9699 is a Thumbnut Assembly, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5826, Radio Navigation Equipment, Airborne. Status: active.
NSN 5826-01-111-9699 has 1 manufacturer part number on file: 621-2528-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 621-2528-001: General Characteristics Item Description: AL,2024 TEM T351,0.750 PORM 0.002 IN. DIA,PER QQ-A-225/6; COMPRESSION SPRING,P/N 757-3937-001 AND BALL,P/N 309-0019-000 PLACED IN THUMBNUT,P/N 621-2528-002 FOUR PLACES AND SECURED BY RETAINER INSERT,P/N 757-3933-001; FOUR 0.128 IN. MIN,0.131 IN. MAX DIA HOLES ON 0.528 IN. MIN,0.534 IN. MAX DIA BOLT CIRCLE CONCENTRIC WITHIN 0.003 IN. DIA TO CENTER HOLE WITH 0.328 IN. MIN,0.329 IN. MAX DIA,COUNTERSUNK 88.0 DEG MIN,92.0 DEG MAX TO 0.365 IN. MIN,0.385 IN. MAX DIA; THUMBNUT FLATTED TO 0.500 IN.; O/A THK 0.437 IN.; THUMBNUT FINISH ANODIC COATING TYPE I OR II PER MIL-A-8625 IN; End Item Identification: MOUNTING BASE,EL MT-4681A/A A. 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.