398190 — GEARBOX ASSEMBLY

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

398190: GEARBOX ASSEMBLY.

The GEARBOX ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_height: 0.628 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN, pilot_length: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), pilot_diameter: 0.360 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-162-7269, 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

398190

NSN: 5310-01-162-7269
NIINs: 011627269, 012924627
FSC: 5310 — Nuts and Washers
CAGE: 52661 — RTX CORPORATION DIV PRATT & WHITNEY (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
nut_height	0.628 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
pilot_length	0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
pilot_diameter	0.360 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
hardness_rating	24.0 ROCKWELL C NOMINAL
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
surface_treatment	SILVER THREADS
width_across_flats	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
nominal_thread_size	0.312 INCHES IN
NSN	5310-01-162-7269

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE THREADS

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

HARDNESS RATING: 24.0 ROCKWELL C NOMINAL

•

CRITICALITY CODE JUSTIFICATION: FEAT

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 7250 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.312 INCHES IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE THREADS
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING	24.0 ROCKWELL C NOMINAL
CRITICALITY CODE JUSTIFICATION	FEAT
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 7250 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.312 INCHES IN
PILOT DIAMETER	0.360 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
PILOT LENGTH	0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 3

627802Reference document

Same NSN cross-reference

Reference document — Secondary reference

ZL4156Reference document

Same NSN cross-reference

Reference document — Secondary reference

K29909-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 398190?

398190 is a GEARBOX ASSEMBLY.

What parts can replace 398190?

There are 3 known substitutes for 398190: 627802, ZL4156, K29909-5. Substitute compatibility should be verified for your specific system.

What is the NSN for 398190?

398190 is cataloged in the U.S. Government catalog under NSN 5310-01-162-7269. This indicates validated use in U.S. government and defense supply chains.

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