752 520 — SPRING,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

752 520: SPRING,FLAT.

The SPRING,FLAT is a the manufacturer industrial component. Key specifications include special_features: 1.375 IN. LG,0.125 IN.

W,0.062 IN. THK IN, end_item_identification: KB26B AND C CAMERA 16MM,75-2100 MM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-208-3755, 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

752 520

NSN: 5310-00-208-3755
NIINs: 002083755, 010415887
FSC: 5310 — Nuts and Washers
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)

SPECIFICATIONS

special_features	1.375 IN. LG,0.125 IN. W,0.062 IN. THK IN
end_item_identification	KB26B AND C CAMERA 16MM,75-2100 MM
NSN	5310-00-208-3755

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN

•

BEARING SURFACE FINISH: 125.0 MICROINCHES

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM

•

HOLE CONFIGURATION STYLE: CONFIGURATION B

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758,COND F-4 MIL SPEC 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 0.502 INCHES MAXIMUM IN
BEARING SURFACE FINISH	125.0 MICROINCHES
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING	34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
HOLE CONFIGURATION STYLE	CONFIGURATION B
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6758,COND F-4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.312 INCHES IN
NUT HEIGHT	0.219 INCHES NOMINAL IN
DRILLED HOLE DIAMETER	0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 7

B66322Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

NAS509-5Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LS11170-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

Z00.N5328158360Reference document

Same NSN cross-reference

Reference document — Secondary reference

FF-N-836Reference document

Same NSN cross-reference

Reference document — Identification reference

2210237Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 752 520?

752 520 is a SPRING,FLAT.

What parts can replace 752 520?

There are 7 known substitutes for 752 520: B66322, NAS509-5, LS11170-5 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 752 520?

752 520 is cataloged in the U.S. Government catalog under NSN 5310-00-208-3755. This indicates validated use in U.S. government and defense supply chains.

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