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117989 — INSULATOR,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

117989: INSULATOR,PLATE.

The INSULATOR,PLATE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, thickness: 0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN, key_height: 0.542 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN, overall_width: 2.563 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN, overall_height: 0.004 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN, overall_length: 3.422 INCHES MINIMUM AND 3.484 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-011-7989, 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
117989
NSN: 5315-00-011-7989
NIINs: 000117989, 005095323, 011704577
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
thickness0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
key_height0.542 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
overall_width2.563 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN
overall_height0.004 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN
overall_length3.422 INCHES MINIMUM AND 3.484 INCHES MAXIMUM IN
circle_diameter1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeROUND
key_size_designationWOODRUFF 19
starting_edge_radius0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
NSN5315-00-011-7989
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 117989 · 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: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: ROUND BOTTOM
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OR 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
CIRCLE DIAMETER: 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.542 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 19
•
STARTING EDGE RADIUS: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORROUND BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OR 66 FED STD ALL MATERIAL RESPONSES OVERALL
CIRCLE DIAMETER1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
KEY HEIGHT0.542 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 19
STARTING EDGE RADIUS0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
MATERIALSTEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 2330 OVERALL
THICKNESS0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
MS35756-39Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 117989?
117989 is a INSULATOR,PLATE.
What parts can replace 117989?
There is 1 known substitute for 117989: MS35756-39. Substitute compatibility should be verified for your specific system.
What is the NSN for 117989?
117989 is cataloged in the U.S. Government catalog under NSN 5315-00-011-7989. This indicates validated use in U.S. government and defense supply chains.
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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.