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B707-4 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

B707-4: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: LEAD OVERALL, thickness: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN, hole_diameter: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, overall_diameter: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-637-4106, 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
B707-4
NSN: 5310-00-637-4106
FSC: 5310 — Nuts and Washers
CAGE: 78702 — WADE ANTENNA INC DIV TACO ANTENNA (CAN)
SPECIFICATIONS
materialLEAD OVERALL
thickness0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
hole_diameter0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
overall_diameter0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-L-201 GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-637-4106
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B707-4 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-L-201 GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: LEAD OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
THICKNESS: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-L-201 GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALLEAD OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
THICKNESS0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
390-111Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B707-4?
B707-4 is a WASHER,FLAT.
What parts can replace B707-4?
There is 1 known substitute for B707-4: 390-111. Substitute compatibility should be verified for your specific system.
What is the NSN for B707-4?
B707-4 is cataloged in the U.S. Government catalog under NSN 5310-00-637-4106. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.