Roll-in T-Nuts with Spring Ball
XAHB21 · XAHB23 · XAHB31
Roll-in T-nuts with spring ball feature a spring-loaded ball that holds the nut in position within the T-slot before tightening, preventing it from falling out during assembly. Designed for EU standard profiles, they can be inserted at any position along the slot without end access.
Thread Sizes
M4 – M8
Profile Series
20 – 50 mm (EU)
Retention
Spring Ball
Part Codes
XAHB21 / XAHB23 / XAHB31
Part Number System
Full part numbers are composed of: Code + Series + M
Code
XAHB21
Black anodized finish
XAHB23
Silver steel finish
XAHB31
Silver anodized finish
Series
EU profile series number (e.g. 308 = EU 30 Slot 8mm, 408 = EU 40 Slot 8mm).
M
Thread diameter (M4, M5, M6, M8).
Dimensions & Specifications
All dimensions in millimeters (mm).
Dimensions
| Code | Series | M | A | B | T | T1 | W | Compatible Profile |
|---|---|---|---|---|---|---|---|---|
| XAHJ21 XAHJ23 | 206 | 3 4 5 | 8.5 | 17 | 3.5 | 4 | 6 | EU 20 Slot 6mm |
| 308 | 3 4 5 6 | 11.5 | 17 | 6.5 | 7 | 8 | EU 30 Slot 8mm | |
| 4010 | 4 5 6 8 | 14.5 | 20 | 6.5 | 7 | 10 | EU 40/45 Slot 10mm |
Key Features
Spring Ball Retention
The integrated spring ball holds the nut securely in the T-slot before fastener tightening, preventing it from falling out during overhead or inverted assembly operations.
Roll-in Installation
Tilt and roll the nut into the T-slot at any position along the profile — no end access required. Ideal for adding fastening points to assembled frames.
EU Profile Compatible
Designed for EU standard T-slot profiles from 20 to 50 series (206, 308, 408, 4010/4510/5010), covering the most widely used EU profile dimensions.
Precise Fit
Machined to tight dimensional tolerances for consistent engagement with EU profile T-slots, ensuring reliable clamping force and repeatable assembly quality.
Compact Profile
Low-profile design fits flush within the T-slot channel, maintaining a clean frame exterior without protruding hardware.
Fast Assembly
Combine with standard M-series bolts for rapid, tool-free nut positioning before final tightening — significantly reducing assembly time on complex frames.
Typical Applications
Overhead & Inverted Assembly
The spring ball prevents nuts from falling out during overhead or inverted mounting operations, making these ideal for ceiling-mounted frames and inverted conveyor structures.
Automated Machine Frames
Add fastening points to assembled EU profile machine frames without disassembly, supporting sensor brackets, cable management, and panel mounting.
Industrial Safety Guards
Mount safety guards and protective panels to EU profile frames in manufacturing environments where quick reconfiguration is required.
Conveyor Systems
Secure guide rails, sensor mounts, and structural accessories in conveyor and material handling systems built with EU standard profiles.
Modular Workstations
Attach and reposition work surface components, tool holders, and accessories on adjustable EU profile workstation frames.
Exhibition Structures
Quickly mount and reposition display panels, lighting, and signage on EU profile exhibition stands and trade show booths.
Frequently Asked Questions
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