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Technical Data Sheet
PartsTable / COMPONENT / 53A
53A ✓ 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 HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, style_designator: ANGLE PATTERN, SHIELDED, end_item_identification: SIGHT GLASS 53A A, material_document_and_classification: ASTM-B.61 ASSN STD SINGLE MATERIAL RESPONSE, nominal_pipe_size_for_which_designed: UNABLE TO DECODE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-011-0743, 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
53A
NSN: 5315-00-011-0743
FSC: 5315
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
materialCOPPER ALLOY
style_designatorANGLE PATTERN, SHIELDED
end_item_identificationSIGHT GLASS 53A A
material_document_and_classificationASTM-B.61 ASSN STD SINGLE MATERIAL RESPONSE
nominal_pipe_size_for_which_designedUNABLE TO DECODE
NSN5315-00-011-0743
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 53A · 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
•
FIRST END TAPER ANGLE: 25.0 DEGREES NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633,FS1010 TO FS1030 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
PIN OVERALL DIAMETER: 0.1855 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL OVERALL
•
PIN OVERALL LENGTH: 0.676 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
•
FIRST END STYLE: CHAMFERED
•
FIRST END TAPER LENGTH: 0.016 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END TAPER ANGLE25.0 DEGREES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633,FS1010 TO FS1030 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL DIAMETER0.1855 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL OVERALL
PIN OVERALL LENGTH0.676 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
FIRST END STYLECHAMFERED
FIRST END TAPER LENGTH0.016 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
110743Interchangeable
interchangeable cross-reference
interchangeable
W10074Interchangeable
interchangeable cross-reference
interchangeable
D161950Interchangeable
interchangeable cross-reference
interchangeable
UA34693Interchangeable
interchangeable cross-reference
interchangeable
53AInterchangeable
interchangeable cross-reference
interchangeable
5-4-583ITEM5-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 53A?
53A is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 53A?
There are 22 known substitutes for 53A: 110743, W10074, D161950 and 19 more. Substitute compatibility should be verified for your specific system.
Is 53A still available?
53A 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