PartsTable
Technical Data Sheet
21-1503 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 INSULATOR,ANGLE BRACKET is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.188 INCHES NOMINAL IN, screw_material: STEEL.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-019-3255, 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
MRO MRO_GENERAL 21-1503
NSN: 5305-00-019-3255
FSC: 5305
CAGE: 59873 — SPACELABS-HILLSBORO OPERATIONS SQUIBB VITATEK INC (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.188 INCHES NOMINAL IN
screw_materialSTEEL
fastener_length0.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-019-3255
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21-1503 · 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
THREAD QUANTITY PER INCH: 32
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH: 0.188 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 9S STYLE
HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-409 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH0.188 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 9S STYLE
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-409 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE
SCREW MATERIALSTEEL
THREAD LENGTH0.188 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
21-1503Interchangeable
interchangeable cross-reference
interchangeable
453978Interchangeable
interchangeable cross-reference
interchangeable
19041Interchangeable
interchangeable cross-reference
interchangeable
125-10491-02Interchangeable
interchangeable cross-reference
interchangeable
21-1709Interchangeable
interchangeable cross-reference
interchangeable
831P100-3.9-0.5PF-50Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
Ready to buy 21-1503?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 21-1503?
21-1503 is a INSULATOR,ANGLE BRACKET. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-1503?
There are 10 known substitutes for 21-1503: 21-1503, 453978, 19041 and 7 more. Substitute compatibility should be verified for your specific system.
Is 21-1503 still available?
21-1503 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 21-1503