FNF22-720 — NUT,PLAIN,EXTENDED WASHER,DOUBLE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

FNF22-720: NUT,PLAIN,EXTENDED WASHER,DOUBLE.

NUT,PLAIN,EXTENDED WASHER,DOUBLE. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-948-1256, 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

FNF22-720

NSN: 5310-00-948-1256
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	DOUBLE HEXAGON
thread_class	3B
thread_series	UNF
overall_height	0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
washer_thickness	0.070 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
surface_treatment	CADMIUM OVERALL
width_across_flats	0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
nominal_thread_size	0.438 INCHES IN
washer_outside_diameter	0.750 INCHES NOMINAL IN
thread_quantity_per_inch	20
NSN	5310-00-948-1256

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN

•

WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN

•

THREAD SERIES: UNF

•

WASHER THICKNESS: 0.070 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.438 INCHES IN

•

SURFACE TREATMENT: CADMIUM OVERALL

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS	0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
THREAD SERIES	UNF
WASHER THICKNESS	0.070 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.438 INCHES IN
SURFACE TREATMENT	CADMIUM OVERALL
NUT STYLE	DOUBLE HEXAGON
THREAD CLASS	3B

OTHER ITEMS IN FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540

SUBSTITUTES & CROSS-REFERENCES 3

LH9031-7Reference document

Same NSN cross-reference

Reference document — Secondary reference

H29248-7Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

VN415-C-070Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 FNF22-720?

FNF22-720 is a NUT,PLAIN,EXTENDED WASHER,DOUBLE.

What parts can replace FNF22-720?

There are 3 known substitutes for FNF22-720: LH9031-7, H29248-7, VN415-C-070. Substitute compatibility should be verified for your specific system.

What is the NSN for FNF22-720?

FNF22-720 is cataloged in the U.S. Government catalog under NSN 5310-00-948-1256. This indicates validated use in U.S. government and defense supply chains.

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FNF22-720 — NUT,PLAIN,EXTENDED WASHER,DOUBLE

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