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10866118 — NUT,PLAIN,SLOTTED,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10866118: NUT,PLAIN,SLOTTED,HEXAGON.

The NUT,PLAIN,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: SLOTTED, HEXAGON, nut_height: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UN, thread_direction: RIGHT-HAND, countersink_angle: 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-682-5822, 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
10866118
NSN: 5310-00-682-5822
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1330H OR STEEL COMP 4130H OR STEEL COMP 5130H OR STEEL COMP 8630H OR STEEL COMP 1132 OR STEEL COMP 1137 OR STEEL COMP 1139 OR STEEL COMP 1141 OVERALL
nut_styleSLOTTED, HEXAGON
nut_height0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
thread_class2B
thread_seriesUN
thread_directionRIGHT-HAND
countersink_angle85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
surface_treatmentCADMIUM OVERALL
width_across_flats1.875 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
bearing_surface_typeWASHER FACED
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
NSN5310-00-682-5822
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10866118 · 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
•
WIDTH ACROSS FLATS: 1.875 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A304 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A332 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A304 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A304 ASSN STD 4TH MATERIAL RESPONSE OR 00-S-637 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 7TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 8TH MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
NUT HEIGHT: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.875 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A304 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A332 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A304 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A304 ASSN STD 4TH MATERIAL RESPONSE OR 00-S-637 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 7TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 8TH MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
NUT HEIGHT0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
COUNTERSINK ANGLE85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
NUT STYLESLOTTED, HEXAGON
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 3
10088211Reference document
Same NSN cross-reference
Reference document — Informative reference only
5310006825822Reference document
Same NSN cross-reference
Reference document — Informative reference only
5310PL0890463Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10866118?
10866118 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace 10866118?
There are 3 known substitutes for 10866118: 10088211, 5310006825822, 5310PL0890463. Substitute compatibility should be verified for your specific system.
What is the NSN for 10866118?
10866118 is cataloged in the U.S. Government catalog under NSN 5310-00-682-5822. 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.