PartsTable
Technical Data Sheet
12A7S2 ✓ 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 COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: STEEL TO BE SEAMLESS-BLACK, style_designator: PLAIN, nominal_thread_size: 0.250 INCHES FIRST END IN, nominal_overall_length: 1.625 INCHES IN, thread_series_designator: NPT FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-0680, 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
12A7S2
NSN: 5310-00-167-0680
FSC: 5310
CAGE: 33968 — CLARK EQUIPMENT CO DIV DOOSAN INFRACORE PORTABLE POWER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresSTEEL TO BE SEAMLESS-BLACK
style_designatorPLAIN
nominal_thread_size0.250 INCHES FIRST END IN
nominal_overall_length1.625 INCHES IN
thread_series_designatorNPT FIRST END
NSN5310-00-167-0680
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12A7S2 · 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: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT: CADMIUM OVERALL
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER: 0.971 INCHES MAXIMUM IN
HOLE DIAMETER: 0.572 INCHES MINIMUM AND 0.587 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONMRAP - M-ATV WITH CS13 POP AND SNE
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.971 INCHES MAXIMUM IN
HOLE DIAMETER0.572 INCHES MINIMUM AND 0.587 INCHES MAXIMUM IN
MATERIAL THICKNESS0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
X532Interchangeable
interchangeable cross-reference
interchangeable
4E09Interchangeable
interchangeable cross-reference
interchangeable
PC120898Interchangeable
interchangeable cross-reference
interchangeable
120898Interchangeable
interchangeable cross-reference
interchangeable
MS35338-30Interchangeable
interchangeable cross-reference
interchangeable
39319Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12A7S2?
12A7S2 is a COUPLING,PIPE.
What parts can replace 12A7S2?
There are 19 known substitutes for 12A7S2: X532, 4E09, PC120898 and 16 more. Substitute compatibility should be verified for your specific system.
Is 12A7S2 still available?
12A7S2 is currently cancelled.
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