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Technical Data Sheet
PartsTable / COMPONENT / 85121
85121 ✓ 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 COVER,HYDRAULIC,PUMP-MOTOR is a the manufacturer industrial component. Key specifications include material: PLASTIC, POLYETHYLENE (PP) OUTER CONTAINER, body_width: 0.560 INCHES NOMINAL IN, head_style: HEXAGON, body_height: 0.510 INCHES NOMINAL IN, body_length: 0.560 INCHES NOMINAL IN, design_form: STRAIGHT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0029, 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
85121
NSN: 5305-00-010-0029
FSC: 5305
CAGE: 08683 — BROCKWAY MOTOR TRUCKS DIV OF MACK TRUCKS INC (USA)
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP) OUTER CONTAINER
body_width0.560 INCHES NOMINAL IN
head_styleHEXAGON
body_height0.510 INCHES NOMINAL IN
body_length0.560 INCHES NOMINAL IN
design_formSTRAIGHT
head_height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
specific_useDISCHARGE COVER
thread_class2A A
thread_length1.000 INCHES MINIMUM IN
inclosure_typeFULLY INCLOSED
capacity_rating5.0 QUARTS NOMINAL
NSN5305-00-010-0029
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 85121 · 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
•
FASTENER LENGTH: 1.750 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 24
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 2 GRADE
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
THREAD LENGTH: 1.000 INCHES MINIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.750 INCHES NOMINAL IN
THREAD QUANTITY PER INCH24
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 2 GRADE
MATERIALSTEEL OVERALL
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNF
THREAD LENGTH1.000 INCHES MINIMUM IN
THREAD DIRECTIONRIGHT-HAND
MINIMUM TENSILE STRENGTH69000 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD DIAMETER0.375 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
6211Interchangeable
interchangeable cross-reference
interchangeable
8512-1Interchangeable
interchangeable cross-reference
interchangeable
8512ITEM26Interchangeable
interchangeable cross-reference
interchangeable
10-0029Interchangeable
interchangeable cross-reference
interchangeable
11-0156A2Interchangeable
interchangeable cross-reference
interchangeable
11-0156Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 85121?
85121 is a COVER,HYDRAULIC,PUMP-MOTOR.
What parts can replace 85121?
There are 16 known substitutes for 85121: 6211, 8512-1, 8512ITEM26 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 85121?
85121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0029. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026