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AB2503E14 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AB2503E14: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: WATERTIGHT, head_height: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN, thread_length: 0.377 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN, screw_material: STEEL COMP 4037. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-177-5643, 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
AB2503E14
NSN: 5305-00-177-5643
FSC: 5305 — Screws
CAGE: 02310 — PATTONAIR USA INC DBA INCORA DIV UNISEAL DIVISION (USA)
SPECIFICATIONS
head_styleWATERTIGHT
head_height0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
thread_length0.377 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
screw_materialSTEEL COMP 4037
fastener_length0.860 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
special_featuresFURNISHED WITH ONE POLYTETRAFLUOROETHYLENE WASHER AND ONE SILICONE RUBBER O-RING
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM
NSN5305-00-177-5643
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AB2503E14 · 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: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM
•
FASTENER LENGTH: 0.860 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.377 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: WATERTIGHT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM
FASTENER LENGTH0.860 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE
THREAD LENGTH0.377 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEWATERTIGHT
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 4037
SPECIAL FEATURESFURNISHED WITH ONE POLYTETRAFLUOROETHYLENE WASHER AND ONE SILICONE RUBBER O-RING
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
11070004Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AB2503E14?
AB2503E14 is a SCREW,MACHINE.
What parts can replace AB2503E14?
There is 1 known substitute for AB2503E14: 11070004. Substitute compatibility should be verified for your specific system.
What is the NSN for AB2503E14?
AB2503E14 is cataloged in the U.S. Government catalog under NSN 5305-00-177-5643. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.