NSN 2530-00-574-9123, 2530005749123
Cancelled -> Replaced by 2530007349563

Federal Supply Classification: FSC 2530 - Vehicular Brake, Steering, Axle, Wheel, and Track Components
National Item Identification Number: NIIN 005749123
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (P) There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 2530-00-574-9123

National Stock Number (NSN) 2530-00-574-9123, or NIIN 005749123, (ratchet segment) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN replaces 1 stock number, 2530007349563.

There are 7 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 2530005749123 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) STEEL,SAE 1010 OR 1020,0.250 IN. THK,CENTERLINE 3.375 IN. LG,ON 4.0625 IN. RADIUS,TOP ON 4.500 IN. RADIUS,BOTTOM ON 3.59375 IN. RADIUS,1.000 IN. LEFT OF CENTER LINE TO 0.6875 IN. RT OF CENTER LINE,2 HOLES 0.34375 IN. DIA,CENTERED 2.500 IN. APART ON CENTER LINE,BOTH HOLES COUNTERSUNK ON BACK SIDE,76.0 DEG,0.65625 IN. SURFACE DIA,BOTH ENDS ROUNDED ON 0.4375 IN. RADIUS FROM CENTER OF HOLES,9 NOTCHES ON BOTTOM EDGE STARTING 1.15625 IN. LEFT OF CENTER LINE
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) GSTEEL,SAE 1010 OR 1020,0.250 IN. THK,CENTERLINE 3.375 IN. LG,ON 4.0625 IN. RADIUS,TOP ON 4.500 IN. RADIUS,BOTTOM ON 3.59375 IN. RADIUS,1.000 IN. LEFT OF CENTER LINE TO 0.6875 IN. RT OF CENTER LINE,2 HOLES 0.34375 IN. DIA,CENTERED 2.500 IN. APART ON CENTER LINE,BOTH HOLES COUNTERSUNK ON BACK SIDE,76.0 DEG,0.65625 IN. SURFACE DIA,BOTH ENDS ROUNDED ON 0.4375 IN. RADIUS FROM CENTER OF HOLES,9 NOTCHES ON BOTTOM EDGE STARTING 1.15625 IN. LEFT OF CENTER LINE