Sinsdar

T-Slot Fastener Comparison

Hammer Head T-Nuts vs Hammer Head T-Bolts: XAHC or XAIC?

Choose XAHC Hammer Head T-Nuts when the slot fastener should provide an internal thread for a separate bolt. Choose XAIC Hammer Head T-Bolts when a threaded stud should project out of the slot, pass through the external component and receive a separate flange nut.

XAIC provides the highest locking strength among the T-slot fastening options covered in this range. It is the preferred choice for heavy-load, cantilevered or vibration-exposed assemblies and permanent rigid connections. The stud faces outward and is secured with the flange nut outside the joint.

Both families can be installed through the slot after frame assembly. Their hammer-head geometry enters through the slot opening and rotates 90 degrees to engage inside the profile.

Compare XAHC and XAIC
XAHC hammer head T-nuts with internal threads

XAHC Hammer Head T-Nuts

XAHC21 / XAHC22 / XAHC23 / XAHC31

XAIC hammer head T-bolts with external threads

XAIC Hammer Head T-Bolts

XAIC21 / XAIC22 / XAIC23 / XAIC31

XAHC and XAIC at a glance

Thread arrangement

XAHC Hammer Head T-Nuts
Internal metric thread
XAIC Hammer Head T-Bolts
External metric thread on a projecting stud

Mating fastener

XAHC Hammer Head T-Nuts
Separate bolt
XAIC Hammer Head T-Bolts
Separate flange nut

How the external component is secured

XAHC Hammer Head T-Nuts
Bolt passes through the component and threads into XAHC
XAIC Hammer Head T-Bolts
XAIC stud passes through the component and the flange nut is tightened outside

Assembly stage

XAHC Hammer Head T-Nuts
Post-assembly
XAIC Hammer Head T-Bolts
Post-assembly

How the slot fastener engages

XAHC Hammer Head T-Nuts
Insert narrow-side first and rotate 90 degrees
XAIC Hammer Head T-Bolts
Insert the hammer head through the slot and rotate 90 degrees

Open profile end required

XAHC Hammer Head T-Nuts
No
XAIC Hammer Head T-Bolts
No

Temporary spring retention

XAHC Hammer Head T-Nuts
None
XAIC Hammer Head T-Bolts
None

Vertical positioning before engagement

XAHC Hammer Head T-Nuts
Support XAHC until the bolt begins to engage
XAIC Hammer Head T-Bolts
Support XAIC until the flange nut begins to engage

Available product range

XAHC Hammer Head T-Nuts
XAHC21/22/23/31; GB G306/G408 and EU 206/308/408/4010/4510/5010; M4, M5, M6 or M8, with the exact thread options selected from the profile-series row
XAIC Hammer Head T-Bolts
XAIC21/22/23/31; GB G306/G408 and EU 206/308/408/4010/4510/5010; M5, M6 or M8; select the available threaded length from the profile-series row

Materials and finishes

XAHC Hammer Head T-Nuts
Carbon steel with zinc, nickel or chrome plating, and SUS304 with vibratory polishing, according to code and profile system
XAIC Hammer Head T-Bolts
Carbon steel with zinc, nickel or chrome plating, and SUS304 with vibratory polishing, according to code and profile system

Choose XAHC for an internal thread in the slot

XAHC stays inside the profile slot and receives a separate bolt from the outside. Insert the nut with its narrow side aligned to the slot opening. The raised step and toothed surface face outward toward the opening.

A lightly engaged standard right-hand bolt can be used to drive the clockwise 90-degree rotation. The nut reaches its engaged position when the diagonal stop contacts the inner slot wall and the raised step appears crosswise through the slot opening.

Use the XAHC product table to select the exact GB or EU profile row, slot opening, internal thread, dimensions, material and finish.

View XAHC Hammer Head T-Nuts

Choose XAIC when locking strength is the priority

XAIC combines the hammer head and an external threaded stud. Insert the hammer head through the slot opening, rotate it 90 degrees, position the external component over the outward-facing stud, then fit and tighten a separate flange nut.

XAIC provides the highest locking strength among the T-slot fastening options covered in this range. Choose it for heavy-load, cantilevered or vibration-exposed assemblies and permanent rigid connections.

The threaded length must suit the external component and the complete fastening arrangement. Select the profile series, slot opening, metric thread, listed length, dimensions, material and finish from the applicable XAIC product row.

View XAIC Hammer Head T-Bolts

Choose the fastening arrangement before the thread size

With XAHC, the removable bolt approaches the slot from outside and threads into the nut inside the profile. With XAIC, the T-bolt's threaded stud projects from the slot and the removable flange nut is tightened from outside.

Check access for the bolt head or flange nut, the external component's hole, the component thickness and the complete hardware stack before selecting a thread or bolt length.

Match the exact product row

For XAIC, select an available threaded length from the applicable profile-series row. A thread designation alone does not establish the correct bolt length or complete assembly fit. For both families, match:

  • GB or EU profile system
  • Exact profile series
  • Slot opening and internal slot geometry
  • Metric thread and mating fastener
  • Dimensions shown for the selected row
  • Material, finish and joint layout

Which one should you order?

  • Choose XAHC when the joint is designed for a separate bolt to thread into a nut inside the profile slot.
  • Choose XAIC when higher locking strength is required for a heavy-load, cantilevered, vibration-exposed or permanent rigid connection.
  • XAIC requires a separate flange nut.
  • Choose the exact product row only after the profile geometry, thread and complete mating-hardware arrangement have been checked.

Frequently Asked Questions

Send your joint details for an XAHC or XAIC quote

Include the profile system and series, slot opening, internal dimensions, joint drawing, required thread, external component thickness, preferred fastening arrangement, material or finish and quantity.

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