PartsTable
Technical Data Sheet
GB3251 ✓ 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 PISTON,FILTER,REMOVABLE is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL, groove_width: 0.125 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.250 INCHES NOMINAL IN, overall_height: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, flange_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-109-0304, 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
GB3251
NSN: 5325-00-109-0304
FSC: 5325
CAGE: 86510 — PHILPOTT RUBBER CO (USA)
SPECIFICATIONS
materialRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
groove_width0.125 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.250 INCHES NOMINAL IN
overall_height0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
flange_thickness0.125 INCHES NOMINAL IN
special_featuresBLACK
end_item_identificationACFT ENG TF-39
groove_outside_diameter0.375 INCHES NOMINAL IN
grommet_construction_typeSOLID
nonmetallic_hardness_rating50.0 MINIMUM SHORE DUROMETER A AND 70.0 MAXIMUM SHORE DUROMETER A
large_flange_outside_diameter0.562 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
NSN5325-00-109-0304
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GB3251 · 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
GROOVE WIDTH: 0.125 INCHES NOMINAL IN
NONMETALLIC HARDNESS RATING: 50.0 MINIMUM SHORE DUROMETER A AND 70.0 MAXIMUM SHORE DUROMETER A
GROMMET STYLE: ROUND
GROMMET CONSTRUCTION TYPE: SOLID
MATERIAL: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
GROOVE OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
GROOVE WIDTH0.125 INCHES NOMINAL IN
NONMETALLIC HARDNESS RATING50.0 MINIMUM SHORE DUROMETER A AND 70.0 MAXIMUM SHORE DUROMETER A
GROMMET STYLEROUND
GROMMET CONSTRUCTION TYPESOLID
MATERIALRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
SPECIAL FEATURESBLACK
OVERALL HEIGHT0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
GROOVE OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
FLANGE THICKNESS0.125 INCHES NOMINAL IN
HOLE DIAMETER0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
1DL3Interchangeable
interchangeable cross-reference
interchangeable
285-4Interchangeable
interchangeable cross-reference
interchangeable
87-00-302Interchangeable
interchangeable cross-reference
interchangeable
35-61802-1001-2Interchangeable
interchangeable cross-reference
interchangeable
GB3251Interchangeable
interchangeable cross-reference
interchangeable
969409-9924Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GB3251?
GB3251 is a PISTON,FILTER,REMOVABLE.
What parts can replace GB3251?
There are 23 known substitutes for GB3251: 1DL3, 285-4, 87-00-302 and 20 more. Substitute compatibility should be verified for your specific system.
Is GB3251 still available?
GB3251 is currently cancelled.
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