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398733 — CALIPER,DISC BRAKE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

398733: CALIPER,DISC BRAKE.

The CALIPER,DISC BRAKE is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: (2) BRAKE GP-SERVICE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-554-5482, 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
398733
NSN: 5310-00-554-5482
NIINs: 005545482, 016231358
FSC: 5310 — Nuts and Washers
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agency(2) BRAKE GP-SERVICE
NSN5310-00-554-5482
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 398733 · 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: 1.000 INCHES NOMINAL IN
•
HARDNESS RATING: 83.5 ROCKWELL B MINIMUM AND 89.5 ROCKWELL B MAXIMUM
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6050 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
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PERIPHERAL SHAPE STYLE: ROUND
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MATERIAL: STEEL OVERALL
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CENTER HOLE SHAPE STYLE: ROUND
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HOLE DIAMETER: 0.600 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.000 INCHES NOMINAL IN
HARDNESS RATING83.5 ROCKWELL B MINIMUM AND 89.5 ROCKWELL B MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6050 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.600 INCHES NOMINAL IN
THICKNESS0.231 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 398733?
398733 is a CALIPER,DISC BRAKE.
What is the NSN for 398733?
398733 is cataloged in the U.S. Government catalog under NSN 5310-00-554-5482. 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.