PartsTable
Technical Data Sheet
A1373 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT, nut_style: HEXAGON, body_width: 2.000 INCHES NOMINAL IN, nut_height: 0.438 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN, seat_angle: 45.0 DEGREES FIRST END, body_height: 4.000 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3320, 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
MRO MRO_GENERAL A1373
NSN: 5310-00-010-3320
FSC: 5310
CAGE: 81118 — EATON CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT
nut_styleHEXAGON
body_width2.000 INCHES NOMINAL IN
nut_height0.438 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
seat_angle45.0 DEGREES FIRST END
body_height4.000 INCHES NOMINAL IN
body_length3.000 INCHES NOMINAL IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
body_materialMETAL
hole_diameter0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
thread_seriesUNF
NSN5310-00-010-3320
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A1373 · OEM ⚠ 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: 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
MATERIAL: STEEL CORROSION RESISTING OVERALL
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
HOLE DIAMETER: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.586 INCHES MAXIMUM IN
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.586 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
316-1-2PInterchangeable
interchangeable cross-reference
interchangeable
615AInterchangeable
interchangeable cross-reference
interchangeable
40049Interchangeable
interchangeable cross-reference
interchangeable
X528Interchangeable
interchangeable cross-reference
interchangeable
M22520/10-104Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-22520/10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A1373?
A1373 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace A1373?
There are 29 known substitutes for A1373: 316-1-2P, 615A, 40049 and 26 more. Substitute compatibility should be verified for your specific system.
Is A1373 still available?
A1373 is currently cancelled.
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