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A07993 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A07993: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: WATERTIGHT, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.306 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN, thread_length: 0.658 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN, screw_material: STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP XM-7. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-326-2824, 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
A07993
NSN: 5305-01-326-2824
FSC: 5305 — Screws
CAGE: K0967 — MBDA UK LTD (GBR)
SPECIFICATIONS
head_styleWATERTIGHT
head_height0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.306 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN
thread_length0.658 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
screw_materialSTEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP XM-7
fastener_length0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
locking_featurePATCH OR PELLET OR STRIP
thread_directionRIGHT-HAND
features_providedO RING
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.164 INCHES IN
NSN5305-01-326-2824
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A07993 · 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: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.658 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
•
LOCKING FEATURE MATERIAL: PLASTIC POLYAMIDE NYLON
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
FEATURES PROVIDED: O RING
•
HEAD STYLE: WATERTIGHT
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD LENGTH0.658 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
LOCKING FEATURE MATERIALPLASTIC POLYAMIDE NYLON
NOMINAL THREAD DIAMETER0.164 INCHES IN
FEATURES PROVIDEDO RING
HEAD STYLEWATERTIGHT
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPATCH OR PELLET OR STRIP
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
MS3212-28LReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A07993?
A07993 is a SCREW,MACHINE.
What parts can replace A07993?
There is 1 known substitute for A07993: MS3212-28L. Substitute compatibility should be verified for your specific system.
What is the NSN for A07993?
A07993 is cataloged in the U.S. Government catalog under NSN 5305-01-326-2824. 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.