Weight Tray (7.5 lb) – TTC3040

The calibration weight holder TTC3040 belongs to the Snap-on weight hangers and weight trays range, and Lost in HCM supplies it to workshops and factories across Vietnam. Snap-on lists the country of origin as USA.

Calibration weight holder TTC3040 overview

Teams that run torque testers in a plant need a way to confirm the tester itself still reads true. The calibration weight holder TTC3040 supports that check, because it lets you apply dead weight loads in clear, known steps. In short, the physics does the measuring.

Each hanger or tray is a plain mechanical part with no electronics to fail. So it suits a quality room, a tool crib, or a lab bench. Lost in HCM supplies these items to FDI plants in Vietnam with CO/CQ papers and a VAT e-invoice.

Specifications at a glance

These figures come from the Snap-on listing for TTC3040. Values marked “calculated” are unit conversions we added for convenience.

How the calibration weight holder works

A dead weight check uses a loading arm fixed to the tester drive at a known length. You hang the weight holder from the end of the arm. Then gravity pulls the weights down, so the arm applies a steady torque that you can calculate.

First, you level the arm and zero the tester with only the hanger or tray fitted. Next, you add weights in steps and note the tester reading at each step. Finally, you compare each reading with the calculated torque for that load.

Key features of the calibration weight holder TTC3040

Every holder in this family shares the same design logic, from simple mechanical parts to clear weight names on each item. Here are the features that matter most when you compare options.

• Hangers and trays in one family. The family includes weight hangers for light loads and weight trays for larger stacks. Therefore, one system can cover low and high check points on a torque tester.
• Light hangers for fine loads. Snap-on lists hangers named 4 oz and 1/2 lb for the low end of a range. So you can apply small, precise load steps where fine resolution matters most.
• Trays for larger weight stacks. Trays named 7.5 lb, 15 lb, and 50 lb hold bigger stacks of weights. As a result, the same arm can reach check points near the top of larger tester ranges.
• Simple mechanical design. Each holder is a plain mechanical part with no battery, cable, or display. That means there is little to fail, and the part stays usable for many years.
• Part of the tester system. Snap-on lists these items under its electronic torque tester and calibrator range. In addition, they work with the loading arm and weights that the tester system specifies.
• Field repairable trays. Snap-on marks most items in this family as field repairable under its repair part warranty terms. Meanwhile, the 4 oz hanger is listed with no warranty.

Typical applications

These holders solve one problem well: applying known loads to a tester in clear steps. Below are typical jobs where that matters, from daily checks to audits. Each one also rewards a steady, repeatable load.

• Checking a torque tester. Quality teams hang known weights from a loading arm to confirm that a tester still reads true. If a reading drifts, they send the tester for calibration.
• Low-range transducer checks. Small transducers for screwdrivers need very light, exact loads. A 4 oz or 1/2 lb hanger lets the team apply fine steps at the bottom of the range.
• High-range verification points. Larger testers need load points near full scale to prove their accuracy. For example, a 50 lb tray carries the stack needed for these upper check points.
• Daily or weekly tester checks. Many plants check their testers on a fixed schedule between formal calibrations. Dead weight loads make that routine fast, because the setup needs no extra electronics.
• Training torque technicians. A dead weight setup shows clearly how force and distance create torque. So trainers use it to teach new staff the basics of torque measurement.
• Audit evidence for quality systems. Auditors often ask how a plant knows its testers still read correctly. A logged dead weight check gives a simple, physical answer to that question.

Industries that use the calibration weight holder TTC3040

Weight hangers and trays matter wherever a plant needs to prove its torque testers still read true. The industries below rely on them every day. Many of these teams also work in FDI plants across Vietnam.

• Quality and metrology rooms. Inspection teams keep testers and transducers reading true for the whole plant. In Vietnam, many FDI plants run their own quality rooms and log regular dead weight checks.
• Automotive manufacturing. Assembly plants check hundreds of torque tools against testers every month. Therefore, their tester checks must stay reliable, and dead weight loads help confirm them.
• Electronics manufacturing. Electronics plants rely on low-range testers for torque screwdrivers on fine screws. So light hangers suit their very low check points in Bac Ninh and Thai Nguyen.
• Aerospace maintenance. MRO shops keep strict records for every torque tool and tester they use. In addition, dead weight checks give them clear evidence between formal calibrations.
• Tool cribs and service centers. Central tool cribs manage wrench fleets for several lines or sites. Meanwhile, a tester with a dead weight setup lets them screen tools before sending them out.
• Technical training centers. Vocational schools and company academies teach torque basics to new technicians. A dead weight setup makes the link between force, distance, and torque easy to see.

Calibration weight holder TTC3040 compared with similar brands

Several makers sell loading arms, weights, and holders for torque tester checks. Each system is built around its own arm length and fittings, so parts rarely mix across brands. The comparison below shows where the calibration weight holder TTC3040 fits among common choices.

If your team already runs Snap-on torque testers, these hangers and trays are the simplest choice. They match the rest of the Snap-on accessory line. Even so, confirm current specs with each maker before you compare dead weight systems. Specifications change over time, so confirm current data with each maker before you decide.

Choosing the right model

• Start with the range of the tester you need to check. Light hangers suit low check points, while trays suit points near full scale.
• Confirm whether the weight in each name is the holder's own mass or its load rating. Then plan your load steps with the right figure.
• Count the holder mass in your torque calculation. Many procedures treat the empty hanger or tray as the first load step.
• Match the holder to your loading arm and its hook or pin. A loose fit can swing and add error to each reading.
• Plan a full set of weights for every check point you need. That way, the team can run the whole check without borrowing parts.
• Read the warranty line on each product page. Most items are field repairable, but the 4 oz hanger lists no warranty.

For other sizes in the same range, compare Weight Hanger (4 oz) – 390-2-2, Weight Hanger (1/2 lb) – TTC301, Weight Tray (15 lb) – TTC3020, Weight Tray (50 lb) – TTC3030. Also browse the full Snap-on torque tools shop for handles, testers and adapters.

Care, storage and calibration

• Store hangers and trays in a dry cabinet with the weights. Then the hooks and surfaces stay free of rust and dirt that change their mass.
• Wipe each holder with a clean, dry cloth before use. Also avoid oil and fingerprints on the weights, because residue adds small errors over time.
• Keep the tester itself on a 12-month calibration cycle, in line with ISO 6789 practice for torque tools. We can arrange recalibration through an accredited laboratory.
• Never load a holder beyond the stack the system is designed for. Too much weight can bend a hook or tray, so retire any part that looks distorted.
• Pack holders and weights in padded boxes for transport between sites. In addition, keep them dry during the humid season to avoid corrosion.

Frequently asked questions

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