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Technical Data Sheet

21027A — Technical Data Sheet

✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN, head_height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_length: 0.540 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN, fastener_length: 0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-01-077-9714, 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
21027A
NSN: 5305-01-077-9714
FSC: 5305
CAGE: 73734 — FEDERAL SCREW PRODUCTS, INC. (USA)
SPECIFICATIONS
head_stylePAN
head_height0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
thread_length0.540 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
fastener_length0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
precious_materialSILVER
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.112 INCHES IN
screw_surface_treatmentSILVER
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
NSN5305-01-077-9714
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21027A · 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
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
HEAD DIAMETER: 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 40
•
PRECIOUS MATERIAL: SILVER
•
FASTENER LENGTH: 0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: SILVER
•
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD DIAMETER0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH40
PRECIOUS MATERIALSILVER
FASTENER LENGTH0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTSILVER
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.112 INCHES IN
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
R21926InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
21926InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
15BAInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
386645InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FA11-664InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7406388InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21027A?
21027A is a SCREW,MACHINE.
What parts can replace 21027A?
There are 12 known substitutes for 21027A: R21926, 21926, 15BA and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21027A?
21027A is cataloged in the Federal Logistics Information System under NSN 5305-01-077-9714. This indicates validated use in U.S. government and defense supply chains.
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