Device refurbishmentModel-matched replacement sets restore the original service interface.
Mobile equipment labsThe small head and P2 drive fit a confined case edge.
Maintenance & MROStocked replacements matched to an existing property class, thread and finish.
Food, pharma & cleanroomStainless assemblies that are washed down, where the finish matters as much as the strength.
Typical applications
servicing a five-point bottom-edge screw with a P2 driver
measuring the length under the head
matching the replacement to the exact device model
keeping the original head clearance at the case edge
clamping two machined faces to a calculated preload
bolting brackets, motors and gearboxes to a frame
Service conditions to specify against
Marine and coastal
Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
High load
Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
Torque and preload
The joint is designed around bolt tension, so lubrication, coating and the friction coefficient all change the torque figure — state them together.
Where to use something else
Do not replace a pentalobe screw with a Phillips screw simply because the diameter looks similar; the drive and length are different.
Do not use a machine thread into unthreaded sheet or timber; use a tapping screw, rivet nut or insert made for that parent material.
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.
Dimensioned line drawing of bottom-edge pair Five-Lobe Bottom Service Screws for Mobile Devices to Trade series (five-point service screws). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.
Drive
five-lobe
Driver size (mm)
0.8
Typical length (mm)
6.75~6.8
Length reference
under head
Use
device-specific replacement part
Sends the selected values to the quote form below.
Request a Quotation for Five-Lobe Bottom Service Screws for Mobile Devices
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (Trade series (five-point service screws))
Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.
Service position
Drive
Driver size (mm)
Typical length (mm)
Length reference
Use
bottom-edge pair
five-lobe
0.8
6.75~6.8
under head
device-specific replacement part
Five-Lobe Bottom Service Screws for Mobile Devices are screws manufactured to Trade series (five-point service screws). This page lists the full dimensional range with the key specifications engineers need to select and specify them.
What Are Five-Lobe Bottom Service Screws for Mobile Devices?
Five-Lobe Bottom Service Screws for Mobile Devices are screws defined by Trade series (five-point service screws). They are selected by size designation and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.
Materials & Finishes
Common materials include carbon steel (typically zinc plated or hot-dip galvanized), alloy steel in property classes 8.8, 10.9 and 12.9, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, property class and surface finish appropriate to your load and environment.
Goes With
Hardware commonly specified alongside Five-Lobe Bottom Service Screws for Mobile Devices.
Pricing
Five-Lobe Bottom Service Screws for Mobile Devices are supplied to order. Pricing starts from approximately US$0.10 per piece for standard sizes in carbon steel; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.
Custom manufacturing · Made to drawing
Need a five-lobe bottom service screws for mobile devices outside the standard range?
Thread size and pitch, length, property class, drive form, head geometry and head marking are all specifiable — the standard part is where it starts, not where it stops. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.
01
Cold heading
Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.
Head dimensions and under-head radius checked at set-up and per shift.
02
Thread rolling
Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.
Go / no-go ring gauges to ISO 965 tolerance class 6g.
03
Heat treatment
Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.
Core hardness and tensile tested per lot to ISO 898-1.
04
Surface treatment
Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.
Coating thickness and neutral salt spray hours to ISO 9227.
Video: Five-Lobe Bottom Service Screws for Mobile Devices
Third-party video, selected automatically for this topic. It is not produced by Engineering Hardware and is not a specification source — use the tables on this page for dimensional data.
Frequently Asked Questions
Which standard governs Five-Lobe Bottom Service Screws for Mobile Devices?
Five-Lobe Bottom Service Screws for Mobile Devices are manufactured to Trade series (five-point service screws). The dimensional values on this page follow that standard.
What is the size range of Five-Lobe Bottom Service Screws for Mobile Devices?
The table on this page lists 1 sizes for Five-Lobe Bottom Service Screws for Mobile Devices, ranging from bottom-edge pair to bottom-edge pair. Sizes outside the table can be quoted on request.
In which materials are Five-Lobe Bottom Service Screws for Mobile Devices supplied?
Five-Lobe Bottom Service Screws for Mobile Devices are supplied in alloy steel (typically 10.9 / 12.9 for socket screws), carbon steel and stainless A2 / A4, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for Five-Lobe Bottom Service Screws for Mobile Devices.
How do I request a quotation?
Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.
Message our sales engineersUsually replies within one business day
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