3M347L8 — NUT,SELF-LOCKING,SINGLE BALL SEA

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

3M347L8: NUT,SELF-LOCKING,SINGLE BALL SEA.

NUT,SELF-LOCKING,SINGLE BALL SEA. Key specifications include material: STEEL OVERALL, nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-124-2120, 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

3M347L8

NSN: 5310-00-124-2120
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	SINGLE BALL SEAT, HEXAGON
nut_height	0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
lubrication	SOLUBLE LUBRICANT
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
ball_seat_radius	0.561 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
width_across_flats	0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
NSN	5310-00-124-2120

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: SOLUBLE LUBRICANT

•

WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.500 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN

TECHNICAL CHARACTERISTICS

LUBRICATION	SOLUBLE LUBRICANT
WIDTH ACROSS FLATS	0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.500 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT	0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
BALL SEAT RADIUS	0.561 INCHES NOMINAL IN

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 2

TLN1020L8NReference document

Same NSN cross-reference

Reference document — Secondary reference

52LH6073A080Reference 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 3M347L8?

3M347L8 is a NUT,SELF-LOCKING,SINGLE BALL SEA.

What parts can replace 3M347L8?

There are 2 known substitutes for 3M347L8: TLN1020L8N, 52LH6073A080. Substitute compatibility should be verified for your specific system.

What is the NSN for 3M347L8?

3M347L8 is cataloged in the U.S. Government catalog under NSN 5310-00-124-2120. This indicates validated use in U.S. government and defense supply chains.

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3M347L8 — NUT,SELF-LOCKING,SINGLE BALL SEA

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