PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MIL-DTL-27426/4

MIL-DTL-27426/4 — Technical Data Sheet

✓ 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 302, ring_style: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 1.312 INCHES NOMINAL IN, major_thickness: 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN, outside_diameter: 1.406 INCHES MINIMUM AND 1.419 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5325-00-087-4134, 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
MIL-DTL-27426/4
NSN: 5325-00-087-4134
FSC: 5325
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 302
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter1.312 INCHES NOMINAL IN
major_thickness0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
outside_diameter1.406 INCHES MINIMUM AND 1.419 INCHES MAXIMUM IN
special_featuresRETAINING RING
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
end_item_identification1615015984392, CH-53-MAIN GEAR BOX
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationSAE 302 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-087-4134
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-DTL-27426/4 · 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
•
OUTSIDE DIAMETER: 0.675 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL COMP 302
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 302 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-766, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 0.565 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
•
USAGE DESIGN: INTERNAL
•
MAJOR THICKNESS: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
•
RING STYLE: SPIRAL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.675 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 302
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 302 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-766, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER0.565 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
USAGE DESIGNINTERNAL
MAJOR THICKNESS0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
RING STYLESPIRAL
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
TS57566InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
V00660-120InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
117147InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-DTL-27426InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
M2742640103DInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
KC80084InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MIL-DTL-27426/4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-27426/4?
MIL-DTL-27426/4 is a RING,RETAINING.
What parts can replace MIL-DTL-27426/4?
There are 8 known substitutes for MIL-DTL-27426/4: TS57566, V00660-120, 117147 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-27426/4?
MIL-DTL-27426/4 is cataloged in the Federal Logistics Information System under NSN 5325-00-087-4134. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MIL-DTL-27426/4

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026