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Technical Data Sheet
PartsTable / COMPONENT / R271NAA0037NN519NNQA1
R271NAA0037NN519NNQA1 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 632, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.336 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, major_thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN, surface_treatment: PASSIVATE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-203-5612, 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
R271NAA0037NN519NNQA1
NSN: 5325-01-203-5612
FSC: 5325
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL COMP 632
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.336 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
major_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
criticality_code_justificationZZZY
material_document_and_classificationAMS 5520 ASSN STD SINGLE MATERIAL RESPONSE
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP; MECH ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
NSN5325-01-203-5612
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: R271NAA0037NN519NNQA1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
SURFACE TREATMENT: PASSIVATE
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP; MECH ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
•
MATERIAL: STEEL COMP 632
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5520 ASSN STD SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 0.336 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
•
RING STYLE: EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CRITICALITY CODE JUSTIFICATIONZZZY
SURFACE TREATMENTPASSIVATE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH NAVICP; MECH ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
MATERIALSTEEL COMP 632
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5520 ASSN STD SINGLE MATERIAL RESPONSE
INSIDE DIAMETER0.336 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
RING STYLEEXTERNAL
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIAL HARDNESS RATING63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
0123109100Interchangeable
interchangeable cross-reference
interchangeable
28-00023-013Interchangeable
interchangeable cross-reference
interchangeable
1575194Interchangeable
interchangeable cross-reference
interchangeable
720116Interchangeable
interchangeable cross-reference
interchangeable
720081 REV B ITEM NO. 12Interchangeable
interchangeable cross-reference
interchangeable
MS16624-4037Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R271NAA0037NN519NNQA1?
R271NAA0037NN519NNQA1 is a RING,RETAINING.
What parts can replace R271NAA0037NN519NNQA1?
There are 7 known substitutes for R271NAA0037NN519NNQA1: 0123109100, 28-00023-013, 1575194 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R271NAA0037NN519NNQA1?
R271NAA0037NN519NNQA1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-203-5612. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026