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Technical Data Sheet
PartsTable / COMPONENT / P-20-4
P-20-4 ✓ Verified by PartsTable
HP · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The FILTER ELEMENT,FLUID is a HP industrial component. Key specifications include material: STEEL OVERALL, shank_type: ROUND, head_length: 0.250 INCHES NOMINAL IN, head_diameter: 0.314 INCHES NOMINAL IN, hole_diameter: 0.890 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN, shank_diameter: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3327, 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
P-20-4
NSN: 5310-00-010-3327
FSC: 5310
CAGE: 22888 — FMC CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_typeROUND
head_length0.250 INCHES NOMINAL IN
head_diameter0.314 INCHES NOMINAL IN
hole_diameter0.890 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN
shank_diameter0.125 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter1.464 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN
nondefinitive_spec/std_data2 STYLE AND A CLASS
material_document_and_classificationFED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 MIL STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-010-3327
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P-20-4 · HP ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL THICKNESS: 0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 MIL STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 1.464 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
•
HOLE DIAMETER: 0.890 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 MIL STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER1.464 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
HOLE DIAMETER0.890 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
TB-12Interchangeable
interchangeable cross-reference
interchangeable
E602Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-755Interchangeable
interchangeable cross-reference
interchangeable
P204Interchangeable
interchangeable cross-reference
interchangeable
1N5411Interchangeable
interchangeable cross-reference
interchangeable
DMNI7-10-3327Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P-20-4?
P-20-4 is a FILTER ELEMENT,FLUID manufactured by HP.
What parts can replace P-20-4?
There are 21 known substitutes for P-20-4: TB-12, E602, GGG-C-755 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P-20-4?
P-20-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3327. 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