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117977 — KEY,WOODRUFF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

117977: KEY,WOODRUFF.

The KEY,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1035 OVERALL, thickness: 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN, key_height: 0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, circle_diameter: 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, hardness_rating: 10.0 ROCKWELL C MINIMUM OVERALL, style_designator: ROUND BOTTOM. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-011-7977, 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
117977
NSN: 5315-00-011-7977
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 45RP7 — DRESSTA NORTH AMERICA LTD (USA)
SPECIFICATIONS
materialSTEEL COMP 1035 OVERALL
thickness0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
key_height0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
circle_diameter0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
hardness_rating10.0 ROCKWELL C MINIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeROUND
key_size_designationWOODRUFF B
starting_edge_radius0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-011-7977
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 117977 · 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: 10.0 ROCKWELL C MINIMUM OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: ROUND BOTTOM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CIRCLE DIAMETER: 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF B
•
STARTING EDGE RADIUS: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING10.0 ROCKWELL C MINIMUM OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORROUND BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CIRCLE DIAMETER0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
KEY HEIGHT0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF B
STARTING EDGE RADIUS0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1035 OVERALL
THICKNESS0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 6
4565AReference document
Same NSN cross-reference
Reference document — Secondary reference
905127Reference document
Same NSN cross-reference
Reference document — Secondary reference
43-2MReference document
Same NSN cross-reference
Reference document — Secondary reference
214607Reference document
Same NSN cross-reference
Reference document — Secondary reference
S2304Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BB9349Reference 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 117977?
117977 is a KEY,WOODRUFF.
What parts can replace 117977?
There are 6 known substitutes for 117977: 4565A, 905127, 43-2M and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 117977?
117977 is cataloged in the U.S. Government catalog under NSN 5315-00-011-7977. 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.