PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 11-051-20-000
11-051-20-000 ✓ 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, ring_style: SPECIAL, usage_design: INTERNAL, outside_diameter: 4.312 INCHES NOMINAL IN, material_diameter: 0.125 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-229-0826, 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
11-051-20-000
NSN: 5325-01-229-0826
FSC: 5325
CAGE: 65456 — WOODS T B INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL
usage_designINTERNAL
outside_diameter4.312 INCHES NOMINAL IN
material_diameter0.125 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationQQ-W-428, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-01-229-0826
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11-051-20-000 · 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: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-428, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL
•
MATERIAL DIAMETER: 0.125 INCHES NOMINAL IN
•
USAGE DESIGN: INTERNAL
•
OUTSIDE DIAMETER: 4.312 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: SPECIAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-428, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL
MATERIAL DIAMETER0.125 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
OUTSIDE DIAMETER4.312 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
PR45-28Interchangeable
interchangeable cross-reference
interchangeable
1657047-4Interchangeable
interchangeable cross-reference
interchangeable
B8-2Interchangeable
interchangeable cross-reference
interchangeable
2299827Interchangeable
interchangeable cross-reference
interchangeable
956477Interchangeable
interchangeable cross-reference
interchangeable
507E17Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11-051-20-000?
11-051-20-000 is a RING,RETAINING.
What parts can replace 11-051-20-000?
There are 12 known substitutes for 11-051-20-000: PR45-28, 1657047-4, B8-2 and 9 more. Substitute compatibility should be verified for your specific system.
Is 11-051-20-000 still available?
11-051-20-000 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026