AS21-4 — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

AS21-4: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, hardness_rating: 24.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM, recess_diameter: 0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN, outside_diameter: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-288-1256, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

AS21-4

NSN: 5310-01-288-1256
NIINs: 012881256, 013588542, 013588543, 013588545
FSC: 5310 — Nuts and Washers
CAGE: 10630 — ANILLO INDUSTRIES LLC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
recess_angle	90.0 DEGREES NOMINAL
hole_diameter	0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
hardness_rating	24.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM
recess_diameter	0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
outside_diameter	0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
style_designator	RECESSED
material_thickness	0.064 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
material_document_and_classification	AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-288-1256

COMPONENT DIAGRAM

KEY FEATURES

•

HARDNESS RATING: 24.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM

•

STYLE DESIGNATOR: RECESSED

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

OUTSIDE DIAMETER: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN

•

MATERIAL THICKNESS: 0.064 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN

•

RECESS DIAMETER: 0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN

•

MATERIAL: IRON ALLOY 660 OVERALL

•

HOLE DIAMETER: 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

HARDNESS RATING	24.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR	RECESSED
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER	0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
MATERIAL THICKNESS	0.064 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
RECESS DIAMETER	0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
MATERIAL	IRON ALLOY 660 OVERALL
HOLE DIAMETER	0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
RECESS ANGLE	90.0 DEGREES NOMINAL

SUBSTITUTES & CROSS-REFERENCES 1

88-50001-002Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is AS21-4?

AS21-4 is a HOSE ASSEMBLY,NONMETALLIC.

What parts can replace AS21-4?

There is 1 known substitute for AS21-4: 88-50001-002. Substitute compatibility should be verified for your specific system.

What is the NSN for AS21-4?

AS21-4 is cataloged in the U.S. Government catalog under NSN 5310-01-288-1256. This indicates validated use in U.S. government and defense supply chains.

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AS21-4 — HOSE ASSEMBLY,NONMETALLIC

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