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45503-1 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

45503-1: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, temp_rating: -35.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.618 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, center_hole_diameter: 0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-149-9876, 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
45503-1
NSN: 5305-00-149-9876
NIINs: 001499876, 002249422, 004062139
FSC: 5305 — Screws
CAGE: 64547 — HONEYWELL INTERNATIONAL, INC DIV AEROSPACE-TUCSON (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
temp_rating-35.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter0.618 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
center_hole_diameter0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
end_item_identificationUNDERWATER BREATHING APPARATUS;AIRCRAFT,EAGLE F-15
NSN5305-00-149-9876
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 45503-1 · 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
•
HEAD HEIGHT: 0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: NICKEL
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: BINDING
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTNICKEL
FASTENER LENGTH0.250 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEBINDING
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALCOPPER ALLOY
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 4
4045Reference document
Same NSN cross-reference
Reference document — Secondary reference
5Z1-6-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
EE2-1-6-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
106X1-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 45503-1?
45503-1 is a SCREW,MACHINE.
What parts can replace 45503-1?
There are 4 known substitutes for 45503-1: 4045, 5Z1-6-4, EE2-1-6-4 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 45503-1?
45503-1 is cataloged in the U.S. Government catalog under NSN 5305-00-149-9876. This indicates validated use in U.S. government and defense supply chains.
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