0-521-220B — NUT,UNION

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

0-521-220B: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2017 OVERALL, nut_style: ROUND, nut_height: 0.656 INCHES NOMINAL IN, nut_diameter: 1.500 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-032-7471, 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

0-521-220B

NSN: 4730-00-032-7471
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03990 — INGERSOLL-RAND COMPANY DBA INGERSOLL-RAND (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2017 OVERALL
nut_style	ROUND
nut_height	0.656 INCHES NOMINAL IN
nut_diameter	1.500 INCHES NOMINAL IN
thread_class	2B
thread_series	UN
shoulder_width	0.125 INCHES NOMINAL IN
special_features	KNURL 24 TEETH PER IN. ON OUTER SURFACE
thread_direction	RIGHT-HAND
surface_treatment	ANODIZE OVERALL
nominal_thread_size	1.312 INCHES IN
shoulder_step_width	0.125 INCHES NOMINAL IN
NSN	4730-00-032-7471

COMPONENT DIAGRAM

KEY FEATURES

•

SHOULDER STEP WIDTH: 0.125 INCHES NOMINAL IN

•

SHOULDER WIDTH: 0.125 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625; TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UN

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/5; TEMPER T451 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 1.312 INCHES IN

•

NUT DIAMETER: 1.500 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

SHOULDER STEP WIDTH	0.125 INCHES NOMINAL IN
SHOULDER WIDTH	0.125 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-A-8625; TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UN
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/5; TEMPER T451 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	1.312 INCHES IN
NUT DIAMETER	1.500 INCHES NOMINAL IN
NUT HEIGHT	0.656 INCHES NOMINAL IN
SPECIAL FEATURES	KNURL 24 TEETH PER IN. ON OUTER SURFACE

SUBSTITUTES & CROSS-REFERENCES 1

0-521-220Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

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

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FREQUENTLY ASKED QUESTIONS

What is 0-521-220B?

0-521-220B is a NUT,UNION.

What parts can replace 0-521-220B?

There is 1 known substitute for 0-521-220B: 0-521-220. Substitute compatibility should be verified for your specific system.

What is the NSN for 0-521-220B?

0-521-220B is cataloged in the U.S. Government catalog under NSN 4730-00-032-7471. This indicates validated use in U.S. government and defense supply chains.

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