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125056 — O-RING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

125056: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include outside_diameter: 6.160 INCHES NOMINAL IN, aperture_diameter: 5.160 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL, gage_ring_thickness: 0.080 INCHES NOMINAL IN, fsc_application_data: FUEL LINES,FABRICATED,AIRFRAME, cross-sectional_thickness: 0.120 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-272-5705, 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
125056
NSN: 5310-00-272-5705
NIINs: 002725705, 008157126, 011736665, 012948442
FSC: 5310 — Nuts and Washers
CAGE: 85130 — FLOWSERVE CORPORATION DIV FLOWSERVE US INC (USA)
SPECIFICATIONS
outside_diameter6.160 INCHES NOMINAL IN
aperture_diameter5.160 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
gage_ring_thickness0.080 INCHES NOMINAL IN
fsc_application_dataFUEL LINES,FABRICATED,AIRFRAME
cross-sectional_thickness0.120 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
surface_treatment_document_and_classificationMIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-272-5705
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 125056 · 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
•
WIDTH ACROSS FLATS: 1.631 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 80.0 ROCKWELL B MINIMUM
•
THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 1.125 INCHES IN
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NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 400 GRADE OR 405 GRADE
•
NUT HEIGHT: 0.939 INCHES MINIMUM AND 0.999 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.631 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING80.0 ROCKWELL B MINIMUM
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.125 INCHES IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 400 GRADE OR 405 GRADE
NUT HEIGHT0.939 INCHES MINIMUM AND 0.999 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH7
SUBSTITUTES & CROSS-REFERENCES 7
2242-5-46Reference document
Same NSN cross-reference
Reference document — Secondary reference
2242-5-22Reference document
Same NSN cross-reference
Reference document — Secondary reference
04134517Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Secondary reference
1S-1122-5-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-S-1222Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 125056?
125056 is a O-RING.
What parts can replace 125056?
There are 7 known substitutes for 125056: 2242-5-46, 2242-5-22, 04134517 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 125056?
125056 is cataloged in the U.S. Government catalog under NSN 5310-00-272-5705. This indicates validated use in U.S. government and defense supply chains.
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