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G42-027 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

G42-027: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT CHAMFER, head_height: 0.156 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, thread_length: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-451-8924, 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
G42-027
NSN: 5305-00-451-8924
FSC: 5305 — Screws
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFLAT CHAMFER
head_height0.156 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
thread_length0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.724 INCHES MINIMUM AND 1.776 INCHES MAXIMUM IN
shoulder_length1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
NSN5305-00-451-8924
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: G42-027 · 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: 0.156 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.724 INCHES MINIMUM AND 1.776 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
FASTENER LENGTH1.724 INCHES MINIMUM AND 1.776 INCHES MAXIMUM IN
SHOULDER LENGTH1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPASSIVATE OVERALL
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 3
G42-27Reference document
Same NSN cross-reference
Reference document — Secondary reference
540735-027Reference document
Same NSN cross-reference
Reference document — Secondary reference
540735-27Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 G42-027?
G42-027 is a SCREW,SHOULDER.
What parts can replace G42-027?
There are 3 known substitutes for G42-027: G42-27, 540735-027, 540735-27. Substitute compatibility should be verified for your specific system.
What is the NSN for G42-027?
G42-027 is cataloged in the U.S. Government catalog under NSN 5305-00-451-8924. 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.