PartsTable
Technical Data Sheet
R271NACS031NN056NNPF1 ✓ 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 usage_design: EXTERNAL, inside_diameter: 0.243 INCHES NOMINAL IN, major_thickness: 0.025 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE, casehardening_indicator: NOT CASEHARDENED, material_hardness_rating: 66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-682-1762, 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
R271NACS031NN056NNPF1
NSN: 5325-00-682-1762
FSC: 5325
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
ring_styleE
usage_designEXTERNAL
inside_diameter0.243 INCHES NOMINAL IN
major_thickness0.025 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-682-1762
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: R271NACS031NN056NNPF1 · 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
MAJOR THICKNESS: 0.025 INCHES NOMINAL IN
CASEHARDENING INDICATOR: NOT CASEHARDENED
SURFACE TREATMENT: CADMIUM AND CHROMATE
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66, COMP 1066 FED STD 1ST MATERIAL RESPONSE OR FED STD 66, COMP 1069 FED STD 2ND MATERIAL RESPONSE OR FED STD 66, COMP 1070 FED STD 3RD MATERIAL RESPONSE OR FED STD 66, COMP 1072 FED STD 4TH MATERIAL RESPONSE OR FED STD 66, COMP 1074 FED STD 5TH MATERIAL RESPONSE OR FED STD 66, COMP 1075 FED STD 6TH MATERIAL RESPONSE OR FED STD 66, COMP 1078 FED STD 7TH MATERIAL RESPONSE OR FED STD 66, COMP 1080 FED STD 8TH MATERIAL RESPONSE OR FED STD 66, COMP 1084 FED STD 9TH MATERIAL RESPONSE OR FED STD 66, COMP 1085 FED STD 10TH MATERIAL RESPONSE OR FED STD 66, COMP 1086 FED STD 11TH MATERIAL RESPONSE OR FED STD 66, COMP 1090 FED STD 12TH MATERIAL RESPONSE
MATERIAL: STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090
USAGE DESIGN: EXTERNAL
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
INSIDE DIAMETER: 0.243 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.025 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66, COMP 1066 FED STD 1ST MATERIAL RESPONSE OR FED STD 66, COMP 1069 FED STD 2ND MATERIAL RESPONSE OR FED STD 66, COMP 1070 FED STD 3RD MATERIAL RESPONSE OR FED STD 66, COMP 1072 FED STD 4TH MATERIAL RESPONSE OR FED STD 66, COMP 1074 FED STD 5TH MATERIAL RESPONSE OR FED STD 66, COMP 1075 FED STD 6TH MATERIAL RESPONSE OR FED STD 66, COMP 1078 FED STD 7TH MATERIAL RESPONSE OR FED STD 66, COMP 1080 FED STD 8TH MATERIAL RESPONSE OR FED STD 66, COMP 1084 FED STD 9TH MATERIAL RESPONSE OR FED STD 66, COMP 1085 FED STD 10TH MATERIAL RESPONSE OR FED STD 66, COMP 1086 FED STD 11TH MATERIAL RESPONSE OR FED STD 66, COMP 1090 FED STD 12TH MATERIAL RESPONSE
MATERIALSTEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
INSIDE DIAMETER0.243 INCHES NOMINAL IN
MATERIAL HARDNESS RATING66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
RING STYLEE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
118013GInterchangeable
interchangeable cross-reference
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13063Interchangeable
interchangeable cross-reference
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9116431Interchangeable
interchangeable cross-reference
interchangeable
354345X1Interchangeable
interchangeable cross-reference
interchangeable
N1500-X31ASInterchangeable
interchangeable cross-reference
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F78B31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R271NACS031NN056NNPF1?
R271NACS031NN056NNPF1 is a RING,RETAINING.
What parts can replace R271NACS031NN056NNPF1?
There are 22 known substitutes for R271NACS031NN056NNPF1: 118013G, 13063, 9116431 and 19 more. Substitute compatibility should be verified for your specific system.
Is R271NACS031NN056NNPF1 still available?
R271NACS031NN056NNPF1 is currently cancelled.
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