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Technical Data Sheet
PartsTable / COMPONENT / 28281E
28281E ✓ 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 INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, insert_size: 0.469-18 NS NS, thread_class: 3B, style_designator: PLAIN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-985-3159, 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
28281E
NSN: 5325-00-985-3159
FSC: 5325
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
length0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
insert_size0.469-18 NS NS
thread_class3B
style_designatorPLAIN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.312 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5325-00-985-3159
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 28281E · 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
•
THREAD CLASS: 3B
•
INSERT SIZE: 0.469-18 NS NS
•
STYLE DESIGNATOR: PLAIN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
LENGTH: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
INSERT SIZE0.469-18 NS NS
STYLE DESIGNATORPLAIN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE0.312 INCHES IN
LENGTH0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH18
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
20325Interchangeable
interchangeable cross-reference
interchangeable
N1825Interchangeable
interchangeable cross-reference
interchangeable
72-6970-956Interchangeable
interchangeable cross-reference
interchangeable
58A122C180Interchangeable
interchangeable cross-reference
interchangeable
352-7287Interchangeable
interchangeable cross-reference
interchangeable
42-124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28281E?
28281E is a INSERT,SCREW THREAD.
What parts can replace 28281E?
There are 17 known substitutes for 28281E: 20325, N1825, 72-6970-956 and 14 more. Substitute compatibility should be verified for your specific system.
Is 28281E still available?
28281E is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026