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5340-01-121-2029 An item, usually made of metal, having a finished cap with spring tension prongs on the underside, or spring wire fitted into the sides of the walls. When inserted in punched or drilled holes in metal sheets or tubes, the expanding action of the prongs or spring wire holds the item securely in place. It is specifically designed to close a hole; to cover a hole through which passes a shaft, cable, or the like; or to provide a perforated cover for a vent or breather hole. Excludes FASTENER, SPRING TENSION, TRIM.

Part Alternates: MB1156, MB-1-156, 2762109, 276-2109, 5340-01-121-2029, 01-121-2029, 5340011212029, 011212029

Hardware and Abrasives | Hardware, Commercial

Supply Group (FSG) NSN Assign. NIIN
53 31 OCT 1981 01-121-2029

Cross Reference | NSN 5340-01-121-2029

Part Number Cage Code Manufacturer
276-2109 50621 WAVETEK ROCKLAND INC DIV
MB-1-156 06915 RICHCO INC
MB-1-156 53606 PLASTIC AND METAL PRODUCTS CORPORATION

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Technical Data | NSN 5340-01-121-2029

Characteristic Specifications
MATERIAL PLASTIC
STYLE DESIGNATOR A7 DEEP SPRING CLIP
HEAD HEIGHT 0.180 INCHES NOMINAL
OVERALL HEIGHT 0.421 INCHES NOMINAL
HEAD OUTSIDE DIAMETER 0.370 INCHES NOMINAL
PRONG OUTSIDE DIAMETER 0.156 INCHES NOMINAL
PRONG QUANTITY 2
HOLE ACCOMMODATION DIAMETER 0.156 INCHES NOMINAL
MATERIAL ACCOMMODATED THICKNESS 0.031 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5340-01-121-2029

Category Code Description
Hazardous Material Indicator CodePThere is no information in the HMIS; 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
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information