The Knob, cataloged under National Stock Number 5355-01-107-4178, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-107-4178 |
| Primary Part Number | 12276921-1 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Inside Width | 0.218 INCHES NOMINAL IN |
| Shaft Accommodation Style | RECTANGULAR |
| Inside Length | 1.250 INCHES NOMINAL IN |
| Style Designator | BALL |
| Material Document and Classification | ASTM-D3011 ASSN STD SINGLE MATERIAL RESPONSE OR L-P-394 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-P-46174 MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.250 INCHES SCREW HOLE IN |
| Gripping Surface Condition | SMOOTH |
| Thread Quantity Per Inch | 20 SCREW HOLE |
| Material | PLASTIC ACRYLONITRILE-BUTADIENE-STYRENE (ABS) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | SETSCREWS |
| 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 |
|---|---|
| 12276921-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5355-01-107-4178 is a Knob, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-107-4178 has 1 manufacturer part number on file: 12276921-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12276921-1: Inside Width: 0.218 INCHES NOMINAL IN; Shaft Accommodation Style: RECTANGULAR; Inside Length: 1.250 INCHES NOMINAL IN; Style Designator: BALL. 13 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.