loading
| Availability: | |
|---|---|
When the anchor nut is mounted behind a panel, the mating bolt can be operated from the front side. This is useful for closed sections, housings, equipment panels and locations where a wrench cannot reach the nut during final assembly.
The fixed plate holds the thread center in a defined position. This supports repeatable bolt entry when the panel hole, mounting pattern and nutplate have been aligned correctly.
The two secured lugs react against tightening and removal torque. The nutplate therefore remains captive instead of turning with the bolt.
The bolt may be removed for inspection or component replacement while the anchor nut stays attached to the structure, subject to the permitted reuse life of the self-locking feature.
Visible feature | Function |
|---|---|
Elongated two-lug plate | Provides two mounting points and rotational restraint |
Two circular lug holes | Accept the drawing-specified mounting hardware or installation process |
Raised central boss | Houses the female thread and provides thread engagement |
Fixed thread position | Supports a defined bolt center rather than intentional lateral float |
Yellow-iridescent appearance | Visual characteristic only; not proof of any particular coating |
A successful installation depends on the panel, hole pattern, fasteners and nutplate being specified as one system.
Before installation, confirm:
panel material and thickness;
central bolt-clearance hole diameter;
lug-hole spacing and diameter;
thread designation and mating bolt;
nutplate orientation;
countersink or dimple requirements, if any;
installation-fastener type and grip range;
edge distance and surrounding structure;
required thread engagement;
assembly torque and prevailing-torque limits;
corrosion compatibility between all components.
Check the product against the drawing or purchase order. Confirm that the thread, lug spacing, boss orientation and overall dimensions are correct.
Machine, drill, punch or otherwise prepare the panel holes using the approved production method. Remove burrs and contamination without enlarging the holes beyond tolerance.
Place the anchor nut on the specified side of the panel. Center the female thread with the bolt-access hole. Because this is a fixed configuration, installation error cannot be compensated by intentional nut float unless the actual part design states otherwise.
Install the drawing-specified rivets, screws or other approved attachment hardware through the two lug holes. Apply the correct installation procedure to avoid bending the plate or distorting the threaded boss.
Check that the plate sits as intended, both mounting points are secure and the thread remains aligned. Remove debris and confirm that no burr or fastener head interferes with bolt insertion.
Start the bolt by hand where practical to detect cross-threading. Tighten according to the joint specification, accounting for the confirmed prevailing torque of the self-locking feature.
The term “self-locking” indicates added rotational resistance in the threaded pair. This resistance can help limit loosening caused by vibration, shock or repeated operational movement when the product is correctly specified and installed.
However, reliable performance requires verified data for:
locking mechanism;
first-installation prevailing torque;
removal torque;
permitted reuse cycles;
mating-bolt specification;
lubrication condition;
temperature range;
installation torque;
proof load and thread strength.
Do not estimate these values from the product image or from data for a visually similar nutplate.
A permanently mounted anchor nut can reduce service time because the technician does not need rear access to hold or recover a conventional nut. It can be useful where removable covers, guards, brackets or equipment modules are serviced repeatedly.
During maintenance:
inspect the bolt and nut thread before reassembly;
check the mounting lugs and attachment hardware;
look for plate distortion, loose mounting points or corrosion;
confirm that the bolt enters without binding;
monitor the self-locking resistance using the approved criterion;
replace the nutplate if locking performance falls outside the permitted range;
do not restore locking action by squeezing, hammering or distorting the thread.
This product type may be suitable, subject to drawing approval, for:
machinery access covers;
equipment enclosures;
electrical cabinets;
vehicle and transportation panels;
sheet-metal brackets;
inspection openings;
removable guards;
instrument housings;
internal frame members;
locations with limited reverse-side access.
No aerospace, automotive, railway or other regulated approval is claimed without the applicable standard and supporting records.
The attachment image does not identify the base material or coating. The visible yellow tone may be produced by more than one finishing process and is not a reliable technical specification.
The RFQ should state:
material grade;
heat-treatment condition;
surface-treatment specification;
coating thickness and corrosion test, if required;
compatibility with the panel and rivets;
restrictions on lubricants or sealants;
electrical bonding requirements;
environmental and regulatory requirements.
ordering by appearance without a dimensional drawing;
confusing a fixed anchor nut with a floating design;
using an incorrect thread system or pitch;
misaligning the central boss and panel hole;
selecting mounting fasteners without checking hole size and panel thickness;
deforming the nutplate during installation;
assuming yellow color proves a particular coating;
ignoring the prevailing torque when setting bolt installation torque;
reusing the nutplate beyond its verified locking life;
treating the mounting lugs as load-bearing features without structural validation.
Parameter | Status |
|---|---|
Product designation | Two-Lug Self-Locking Fixed Anchor Nut |
Configuration | Fixed anchor nut with two mounting lugs |
Mounting holes | Two visible circular holes |
Female thread | Present; size and class not provided |
Locking performance | Claimed by product name; test limits not provided |
Material | Not provided |
Surface treatment | Not provided |
Standard | Not provided |
Dimensions | Not provided |
Mounting hardware | Not provided |
Reuse life | Not provided |
It is normally installed before the structure is closed. After correct installation, it can provide a captive thread that is operated from the accessible side.
Rivets are common for nutplates, but the supplied information does not specify the attachment method. Follow the approved drawing.
The product is identified as fixed, not floating. Any permitted movement must be confirmed from the actual design.
The permitted cycles depend on the locking design and governing specification. No reuse value has been provided.
That cannot be confirmed from color alone. The exact finish must appear on the quotation, drawing or certificate.
Provide the thread, dimensions, panel thickness, hole pattern, attachment hardware, material, finish, locking-torque criteria, reuse requirement, quantity and application environment for review before quotation.
