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Due for a buy: items the government buys on a rhythm

Ten years of DLA procurement history and federal awards, one stock number at a time. 16,325 items have enough history to measure; 3,125 buy on a regular cycle. Below: the regular ones whose next buy is due about now, with the cadence, the last buy, the expected window, whether a solicitation is already open, and whether a seller here stocks it. A rhythm, not a schedule; use it to decide what to quote-ready and what to stock, not as a promise.

How well it works: for regular items, “next buy about one typical gap after the last, give or take 121 days” caught the actual next buy 42% of the time across 15,953 past buys, against 22% for a fixed “one year later” guess. Re-tested nightly.

By supply class: 6515 Medical And Surgical Instruments, Equipment, And Supplies (105) · 5330 Packing And Gasket Materials (33) · 4820 Valves, Nonpowered (31) · 5340 Hardware, Commercial (30) · 4730 Hose, Pipe, Tube, Lubrication, And Railing Fittings (29) · 5935 Connectors, Electrical (28) · 5310 Nuts And Washers (27) · 5305 Screws (21) · 6530 Hospital Furniture, Equipment, Utensils, And Supplies (20) · 6505 Drugs And Biologicals (19) · 5930 Switches (18) · 6640 Laboratory Equipment And Supplies (18) · 6550 In Vitro Diagnostic Substances, Reagents, Test Kits And Sets (17) · 5306 Bolts (16) · 5315 Nails, Machine Keys, And Pins (15) · 3120 Bearings, Plain, Unmounted (14) · 5970 Electrical Insulators And Insulating Materials (14) · 5331 O-Ring (12) · 4320 Power And Hand Pumps (12) · 6510 Surgical Dressing Materials (12) · 3040 Miscellaneous Power Transmission Equipment (11) · 6630 Chemical Analysis Instruments (11) · 4720 Hose And Flexible Tubing (11) · 5365 Bushings, Rings, Shims, And Spacers (9) · 5999 Miscellaneous Electrical And Electronic Components (8) · 4310 Compressors And Vacuum Pumps (8) · 6140 Batteries, Rechargeable (8) · 4330 Centrifugals, Separators, And Pressure And Vacuum Filters (8) · 5320 Rivets (7) · 6520 Dental Instruments, Equipment, And Supplies (7) · 5325 Fastening Devices (7) · 2540 Vehicular Furniture And Accessories (7) · 2910 Engine Fuel System Components, Nonaircraft (6) · 6150 Miscellaneous Electric Power And Distribution Equipment (6) · 5945 Relays And Solenoids (6) · 1680 Miscellaneous Aircraft Accessories And Components (6) · 4710 Pipe, Tube And Rigid Tubing (6) · 1560 Airframe Structural Components (6) · 2940 Engine Air And Oil Filters, Strainers, And Cleaners, Nonaircraft (6) · 6220 Electric Vehicular Lights And Fixtures (5) · 5995 Cable, Cord, And Wire Assemblies: Communication Equipment (5) · 4810 Valves, Powered (5) · 1730 Aircraft Ground Servicing Equipment (5) · 5360 Coil, Flat, Leaf, And Wire Springs (5) · 5965 Headsets, Handsets, Microphones And Speakers (5) · 5998 Electrical And Electronic Assemblies, Boards, Cards, And Associated Hardware (5) · 2510 Vehicular Cab, Body, And Frame Structural Components (5) · 6540 Ophthalmic Instruments, Equipment, And Supplies (5) · 6625 Electrical And Electronic Properties Measuring And Testing Instruments (5) · 6210 Indoor And Outdoor Electric Lighting Fixtures (4) · 5342 Hardware, Weapon System (4) · 6105 Motors, Electrical (4) · 6680 Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments (4) · 6145 Wire And Cable, Electrical (4) · 6685 Pressure, Temperature, And Humidity Measuring And Controlling Instruments (4) · 6760 Photographic Equipment And Accessories (4) · 5925 Circuit Breakers (3) · 6665 Hazard-Detecting Instruments And Apparatus (3) · 6545 Replenishable Field Medical Sets, Kits, And Outfits (3) · 2610 Tires And Tubes, Pneumatic, Except Aircraft (3)

Buying events are DIBBS awards and FPDS contract actions on the stock number, with awards fewer than 21 days apart counted once. “Regular” means the gaps between buys vary by less than 60% of their average. The window is the average gap after the last buy, give or take half the gap (at least 45 days). Sellers are PartsAndPlanes listings matched to the NSN. Rebuilt nightly.