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34703S8 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.065 INCHES NOMINAL IN, hole_diameter: 0.250 INCHES NOMINAL IN, overall_diameter: 0.562 INCHES NOMINAL IN, surface_treatment: CADMIUM AND ZINC OVERALL, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-014-7579, 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
34703S8
NSN: 5310-00-014-7579
FSC: 5310
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.065 INCHES NOMINAL IN
hole_diameter0.250 INCHES NOMINAL IN
overall_diameter0.562 INCHES NOMINAL IN
surface_treatmentCADMIUM AND ZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_dataA TYPE
material_document_and_classificationQQ-S-633,COMP FS1010 TO FS1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-014-7579
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 34703S8 · 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
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
SURFACE TREATMENT: CADMIUM AND ZINC OVERALL
•
OVERALL DIAMETER: 0.562 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633,COMP FS1010 TO FS1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HOLE DIAMETER: 0.250 INCHES NOMINAL IN
•
THICKNESS: 0.065 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
SURFACE TREATMENTCADMIUM AND ZINC OVERALL
OVERALL DIAMETER0.562 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633,COMP FS1010 TO FS1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.250 INCHES NOMINAL IN
THICKNESS0.065 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
11-679-51Interchangeable
interchangeable cross-reference
interchangeable
805Interchangeable
interchangeable cross-reference
interchangeable
31216Interchangeable
interchangeable cross-reference
interchangeable
147579Interchangeable
Same NIIN cross-reference
interchangeable
MILW1085TYPEAInterchangeable
Same NIIN cross-reference
interchangeable
34704S7Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 34703S8?
34703S8 is a WASHER,FLAT.
What parts can replace 34703S8?
There are 6 known substitutes for 34703S8: 11-679-51, 805, 31216 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 34703S8?
34703S8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-014-7579. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026