
Middle Atlantic
Middle Atlantic HP 10-32 Rackmounting Screws 100-Pack
★★★★★
Heat-treated 10-32 rackmount screws with shoulder washers that prevent ground loops — 100 pieces ready for a full rack build.
$32.11*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
Shorter screws leave room in equipment racks for cabling
Screws have a rounded end to prevent chafing
Bag contains 100 screws with washers
Specifications
Screw Thread
10-32
Quantity
100-Pack
Screw Head Type
Truss Head
Screw Finish
Black Oxide
Washer Type
Black Nylon Washers, Shoulder Washers
Durability Feature
Heat-treated for enhanced durability
Pros & Cons
👍 Pros
- 10-32 thread is the universal standard for rack equipment — high compatibility across audio, video, and IT gear.
- Heat-treated fasteners provide stronger thread engagement and better resistance to stripping compared to untreated screws.
- Shoulder washers enable ground loop prevention in audio and broadcast racks — a feature most generic rack screw packs omit.
- Black oxide finish resists corrosion in equipment rooms with variable humidity.
- Truss head profile distributes clamping load across a wider face, reducing the chance of cutting into equipment rack ears on repeated re-installations.
👎 Cons
- 100-pack quantity may be more than needed for a single small rack — no smaller quantity option noted.
- Black finish only — no chrome or stainless option for racks where appearance is a priority.
- Not suitable for 12-24 threaded racks — confirm your rack rail thread before purchasing.
- Shoulder washer ground loop benefit requires pairing with a standard flat washer to work correctly — not a standalone solution.
Frequently Asked Questions
What thread size are these screws, and will they fit standard rack equipment?
These are 10-32 thread screws, which is the standard thread used in most audio, video, and IT rack equipment. The vast majority of rack-mount gear — from amplifiers to patch panels to servers — uses 10-32 rack holes, so these are broadly compatible. Verify your rack rail thread before ordering; some older or budget racks use 12-24 thread instead.
What does the shoulder washer do, and when does it matter?
The shoulder washer, when paired with a standard flat washer, electrically isolates the screw from the rack rail. This breaks potential ground loops that occur when multiple pieces of equipment create unintended ground paths through the rack frame — a common source of hum in audio and video installations. For IT racks where ground loops aren't a concern, the shoulder washer is still useful as a surface protector.
Are the black nylon washers included with each screw?
Yes. Each screw in the 100-pack comes with a black nylon washer. The shoulder washers referenced in the ground loop prevention feature are a separate consideration — check the product details for exactly which washer types are included in your specific pack.
Does the black oxide finish affect the screw's thread engagement or holding strength?
No. Black oxide is a surface conversion coating applied after machining — it adds corrosion resistance and the cosmetic black finish without meaningfully altering thread dimensions or reducing clamping strength. Heat treatment of the underlying fastener provides the core strength.
How many screws do I need for a typical rack build?
Standard EIA rack equipment uses two screws per rack unit (RU) on each side rail — so four screws per piece of gear. A 100-pack covers roughly 25 units of equipment at four screws each, which is sufficient for a full 24U rack build with some spares.