The Adjuster,slack,brake, cataloged under National Stock Number 2530-01-149-1781, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Kovatch Corp.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-01-149-1781 |
| Primary Part Number | K-500-CH-1877 |
| Item Name | Adjuster,slack,brake |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Kovatch Corp. |
| Status | ACTIVE |
| Connecting Arm Center to Center Distance Between Spline Hole and Connection Hole | 4.220 INCHES NOMINAL IN |
| Spline Type | STRAIGHT SPLINE |
| Connecting Arm Design | STRAIGHT |
| Connecting Arm Hole Quantity | 2 |
| Connecting Arm Hole Bushing | INCLUDED |
| Shape | TAPERED |
| Spline Quantity | 10 |
| Connecting Arm Thickness | 0.525 INCHES NOMINAL IN |
| Adjustment Type | DOUBLE ARM |
| Major Diameter | 1.530 INCHES NOMINAL IN |
| Largest Diameter | 3.254 INCHES NOMINAL IN |
| Hole Taper | 0.590 INCHES PER FOOT NOMINAL IN |
| Smallest Diameter | 1.110 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K-500-CH-1877 | Kovatch Corp. (USA) |
| Reference | Meaning |
|---|---|
| 25QD 21DP18 | 5/2 Secondary reference U.S. Government activity |
| 25QD 33CP18 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2530-01-149-1781 is a Adjuster,slack,brake, manufactured by Kovatch Corp., classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-149-1781 has 1 manufacturer part number on file: K-500-CH-1877 (Kovatch Corp.).
Key specifications for K-500-CH-1877: Connecting Arm Center to Center Distance Between Spline Hole and Connection Hole: 4.220 INCHES NOMINAL IN; Spline Type: STRAIGHT SPLINE; Connecting Arm Design: STRAIGHT; Connecting Arm Hole Quantity: 2. 13 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.