FN-440-1 — NUT,PLAIN,CLINCH

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

FN-440-1: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CLINCH, nut_height: 0.054 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), pilot_diameter: 0.199 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-420-0551, 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

FN-440-1

NSN: 5310-00-420-0551
FSC: 5310 — Nuts and Washers
CAGE: 46384 — PENN ENGINEERING & MANUFACTURING CORP (USA)

SPECIFICATIONS

material	STEEL COMP 303 OVERALL
nut_style	CLINCH
nut_height	0.054 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
pilot_diameter	0.199 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE OVERALL
width_across_flats	0.250 INCHES NOMINAL IN
nominal_thread_size	0.112 INCHES IN
thread_quantity_per_inch	40
nondefinitive_spec/std_data	I TYPE AND 1 STYLE
NSN	5310-00-420-0551

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.112 INCHES IN

•

PILOT DIAMETER: 0.199 INCHES NOMINAL IN

•

NONDEFINITIVE SPEC/STD DATA: I TYPE AND 1 STYLE

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.112 INCHES IN
PILOT DIAMETER	0.199 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA	I TYPE AND 1 STYLE
NUT HEIGHT	0.054 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
SURFACE TREATMENT	PASSIVATE OVERALL

SUBSTITUTES & CROSS-REFERENCES 8

20474-43Reference document

Same NSN cross-reference

Reference document — Secondary reference

RCN44F(062)Reference document

Same NSN cross-reference

Reference document — Secondary reference

2JC2843H01Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

L520-28Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

175824A004Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

651806-034Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is FN-440-1?

FN-440-1 is a NUT,PLAIN,CLINCH.

What parts can replace FN-440-1?

There are 8 known substitutes for FN-440-1: 20474-43, RCN44F(062), 2JC2843H01 and 5 more. Substitute compatibility should be verified for your specific system.

What is the NSN for FN-440-1?

FN-440-1 is cataloged in the U.S. Government catalog under NSN 5310-00-420-0551. This indicates validated use in U.S. government and defense supply chains.

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