BOLT,CLOSE TOLERANCE (P/N an175-21) - New Surplus
P/N: an175-21
Category: Fasteners & Hardware
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 83 Available |
Product Description
The AN175-21 is a close-tolerance hex-head bolt from the Army-Navy fastener series, featuring 5/16-24 threads and a ground shank. Designed for precision reamed-hole installations in shear-critical airframe joints, this steel bolt maintains tight tolerances to minimize play and movement in load-bearing structures. The ground shank reduces clearance in holes, providing secure positioning without excessive looseness.
Common in wing-to-fuselage attachments and control surface hinges where shear loads demand precision fit. Install in correctly reamed holes and torque per aircraft maintenance manual specifications.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the BOLT,CLOSE TOLERANCE (P/N an175-21)?
The AN175-21 is a close-tolerance hex-head bolt from the Army-Navy fastener series, featuring 5/16-24 threads and a ground shank. Designed for precision reamed-hole installations in shear-critical airframe joints, this steel bolt maintains tight tolerances to minimize play and movement in load-bearing structures.
Does the an175-21 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The BOLT,CLOSE TOLERANCE conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the an175-21 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the an175-21.
Can I order the an175-21 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The BOLT,CLOSE TOLERANCE is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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