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X1177 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

X1177: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN, outside_diameter: 1.045 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-011-5553, 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
X1177
NSN: 5310-00-011-5553
FSC: 5310 — Nuts and Washers
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
hole_diameter0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
outside_diameter1.045 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
NSN5310-00-011-5553
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X1177 · 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
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 1.045 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER1.045 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
MATERIAL THICKNESS0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HOLE DIAMETER0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 8
5310PL0990424Reference document
Same NSN cross-reference
Reference document — Informative reference only
AU29AR331Reference document
Same NSN cross-reference
Reference document — Secondary reference
115553Reference document
Same NSN cross-reference
Reference document — Secondary reference
543327001134Reference document
Same NSN cross-reference
Reference document — Secondary reference
201777Reference document
Same NSN cross-reference
Reference document — Secondary reference
MILW6986TYPEAReference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is X1177?
X1177 is a WASHER,LOCK.
What parts can replace X1177?
There are 8 known substitutes for X1177: 5310PL0990424, AU29AR331, 115553 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for X1177?
X1177 is cataloged in the U.S. Government catalog under NSN 5310-00-011-5553. 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.