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MS35756-121 — KEY,WOODRUFF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS35756-121: KEY,WOODRUFF.

The KEY,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 8630 OVERALL, thickness: 0.500 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN, key_height: 0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, overall_length: 2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN, circle_diameter: 2.740 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN, hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-021-8216, 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
MS35756-121
NSN: 5315-00-021-8216
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 8630 OVERALL
thickness0.500 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
key_height0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
overall_length2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN
circle_diameter2.740 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
special_featuresFLAT BOTTOM TYPE 0.734 IN. MIN 0.740 IN. MAX H IN
style_designatorROUND BOTTOM RELIEVED ENDS
starting_edge_shapeROUND
key_size_designationWOODRUFF V
starting_edge_radius0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
NSN5315-00-021-8216
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS35756-121 · 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
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: ROUND BOTTOM RELIEVED ENDS
•
CIRCLE DIAMETER: 2.740 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF V
•
STARTING EDGE RADIUS: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORROUND BOTTOM RELIEVED ENDS
OVERALL LENGTH2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN
CIRCLE DIAMETER2.740 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN
KEY HEIGHT0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF V
STARTING EDGE RADIUS0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
SPECIAL FEATURESFLAT BOTTOM TYPE 0.734 IN. MIN 0.740 IN. MAX H IN
MATERIALSTEEL COMP 4130 OR STEEL COMP 8630 OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
218216Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS35756-121?
MS35756-121 is a KEY,WOODRUFF.
What parts can replace MS35756-121?
There is 1 known substitute for MS35756-121: 218216. Substitute compatibility should be verified for your specific system.
What is the NSN for MS35756-121?
MS35756-121 is cataloged in the U.S. Government catalog under NSN 5315-00-021-8216. 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.