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PartsTable / COMPONENT / A7099
A7099 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The STEADY,SPECIA is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: ROUND, nut_diameter: 0.375 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.120 INCHES NOMINAL IN, thread_series: UNS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-237-7708, 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
A7099
NSN: 5310-00-237-7708
FSC: 5310
CAGE: 09353 — C AND K COMPONENTS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleROUND
nut_diameter0.375 INCHES NOMINAL IN
thread_class2B
nut_thickness0.120 INCHES NOMINAL IN
thread_seriesUNS
thread_directionRIGHT-HAND
surface_treatmentNICKEL OVERALL
width_across_flats0.350 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch40
NSN5310-00-237-7708
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A7099 · 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
•
NUT STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
NUT DIAMETER: 0.375 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
THREAD QUANTITY PER INCH: 40
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
WIDTH ACROSS FLATS: 0.350 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEROUND
THREAD DIRECTIONRIGHT-HAND
NUT DIAMETER0.375 INCHES NOMINAL IN
THREAD SERIESUNS
THREAD QUANTITY PER INCH40
NOMINAL THREAD SIZE0.250 INCHES IN
WIDTH ACROSS FLATS0.350 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD CLASS2B
NUT THICKNESS0.120 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
4105A983067PC3T8Interchangeable
interchangeable cross-reference
interchangeable
7099Interchangeable
interchangeable cross-reference
interchangeable
S4105-983067PC3T08Interchangeable
interchangeable cross-reference
interchangeable
7299Interchangeable
interchangeable cross-reference
interchangeable
7319Interchangeable
interchangeable cross-reference
interchangeable
17-13995-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A7099?
A7099 is a STEADY,SPECIA.
What parts can replace A7099?
There are 17 known substitutes for A7099: 4105A983067PC3T8, 7099, S4105-983067PC3T08 and 14 more. Substitute compatibility should be verified for your specific system.
Is A7099 still available?
A7099 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026